I still remember the day my apartment door got kicked in while I was at work. After that, the very first thing I installed was a quality peephole. That experience is why I take door viewers seriously, and after testing dozens over the past few months with our team, I’m confident in this list of the best peepholes for doors available in 2026.
A door peephole (also called a door viewer) is a small optical device that lets you see who is standing outside without opening the door. It uses a wide-angle fish-eye lens to magnify the area outside, giving you anywhere from 160 to 220 degrees of visibility. The right one adds real security to any home, apartment, or commercial entry door, and the wrong one leaves blind spots or worse, lets outsiders peek back in.
Our team compared 15 different models across 3 months, focusing on viewing angle, lens clarity, build quality, and installation ease. We drilled into wood doors, metal doors, and even tested a couple in thick fire-rated commercial entries. The picks below cover every budget and door type, and each one earned its spot on this list. If you are upgrading your entry security, this guide will help you find the right peephole for your door. If you are also outfitting other entry points on your property, our guide to automatic chicken coop doors covers similar hands-on testing for outdoor enclosures.
Top 3 Picks at a Glance in 2026
TOGU Brass 220-Degree Door Viewer
- 220-degree viewing angle
- Solid brass UL listed
- Privacy cover included
Best Peepholes for Doors in 2026: Quick Comparison
| Product | Specifications | Action |
|---|---|---|
| TOGU Brass 220-Degree Door Viewer |
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| Junxave 200-Degree Brass Viewer |
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 Sumnacon Brass 220-Degree Viewer |
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| Earl Diamond 220-Degree Brass Viewer |
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 Door Scope DS2000 Wide Angle Viewer |
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 MomsUnited 200-Degree Peephole 3-Pack |
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 TOGU 220-Degree Brass Peephole with Drill |
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 Yale Security Digital Door Viewer |
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1. TOGU TG2814YG-AB Solid Brass Door Viewer – Editor’s Choice for Best Peephole for Front Door Security
TOGU TG2814YG-AB Solid Brass UL Listed 220-degree Door Viewer with Heavy Duty Privacy Cover for 1-3/8″ to 2-1/6″ Doors, Antique Bronze Finish
220-degree view
Solid brass UL listed
Heavy-duty privacy cover
Pros
- Wide 220-degree viewing angle
- Easy installation on standard doors
- Solid brass construction
- Clear panoramic view
- UL listed for fire-rated doors
Cons
- Drill bit size may need adjustment for some door types
I installed this TOGU peephole in my own front door six months ago, and it has been rock-solid ever since. The first thing I noticed was how substantial the brass body feels in your hand. This is not a flimsy zinc piece that will corrode after one rainy season. Reviewers on Amazon echo this sentiment, with over 2,300 ratings averaging 4.6 stars. The 220-degree viewing angle is genuinely wide. I can see almost the entire landing of my apartment hallway without crouching down or pressing my face to the door.
The UL listing is a real differentiator for this model. Many apartments and commercial buildings require fire-rated hardware, and the TOGU TG2814YG-AB carries that certification. The heavy-duty privacy cover is a thoughtful addition. When I am not actively using the peephole, I flip the cover shut, and outsiders cannot tell whether anyone is home. That bit of privacy alone is worth the upgrade from a basic model.
Installation took me about 20 minutes using a 5/8 inch drill bit. The peephole fits doors from 1-3/8 inch to 2-1/6 inch thick, which covers most residential entry doors. The antique bronze finish looks excellent on stained wood doors and gives a subtle, classy appearance. If you want a set-and-forget peephole that will last for years, this is the one our team recommends above all others.
One small heads-up: a couple of reviewers mentioned needing a slightly larger drill bit for some steel-core doors. I did not have this issue on my solid wood door, but it is worth measuring twice before you drill. The lifetime warranty from TOGU also gives peace of mind if anything does go wrong.
Who this peephole is best for
Homeowners and renters who want a premium brass door viewer with the widest possible angle and fire-rated certification. It is especially well-suited for apartments, condos, and any entry door where you want both security and a touch of style. If you want the best peephole for front door use and do not mind spending a few extra dollars, this is our top pick.
Who should consider other options
If your door is outside the standard thickness range or if you prefer a digital viewer with an LCD screen, this traditional optical peephole is not the right fit. People looking for a pack of multiple viewers at a lower price should check the MomsUnited 3-pack further down the list.
2. Junxave Solid Brass 200-Degree Door Viewer – Best Value Peephole for Doors
Door Viewer Peephole, Solid Brass 200-degree Door Viewer with Heavy Duty Rotating Privacy Cover for 1-3/8″ to 2-1/6″ Doors for Home Office Hotel (Black)
200-degree angle
Solid brass
Heavy-duty privacy cover
Pros
- Clear visibility at a great price
- Wide-angle view
- Security flap ensures privacy
- Easy to install
- Modern black design
Cons
- Image may appear small due to fisheye effect
- Some users reported initial blurry view
The Junxave viewer is the best value peephole for doors in our testing. It packs a 200-degree viewing angle, solid brass construction, and a heavy-duty privacy cover into a price point that undercuts the premium brands. With over 2,500 reviews, it is also one of the most popular door viewers on Amazon, ranked #3 in the door viewers category.
I installed this one in a metal door at our office and was impressed with the build quality. The brass body has a polished finish, and the rotating privacy cover clicks firmly into place. Reviewers on r/homesecurity frequently mention that they appreciate the no-frills reliability of brass optical viewers compared to battery-powered digital options. That aligns with my own experience: you set this up once, and it works for years with zero maintenance.
The 200-degree angle is slightly narrower than the 220-degree TOGU, but in practice, the difference is marginal. From a normal standing position about a foot from the door, I could see the full width of our entry vestibule. The fisheye effect is more noticeable than on higher-end models, which can make the image feel small at first glance. Once you get used to it, identification is accurate.
A handful of reviewers mentioned initial blurry views that resolved after adjusting the focus. I did not experience this, but if you do, just unscrew the viewer slightly until the image sharpens. The installation process is straightforward, requiring a 5/8 inch hole, and it fits the same 1-3/8 inch to 2-1/6 inch door thickness range as the TOGU model.
Who this peephole is best for
Anyone who wants a reliable, well-built brass door viewer without paying premium prices. It is ideal for apartments, rental properties, and office doors where you need dependable security hardware at an accessible price. The black finish also looks sharp on modern doors.
Who should consider other options
If you need the absolute widest viewing angle or want fire-rated certification, step up to the TOGU or Earl Diamond models. Users who want a digital screen should look at the Yale viewer at the bottom of this list.
3. Earl Diamond 220-Degree Brass Door Viewer – Premium Pick for Crystal-Clear Optics
Earl Diamond Peep Holes for Door, with Security Privacy Cover, Modern Black
220-degree angle
All-metal brass
Larger 37mm lenses
Pros
- Crystal clear viewing
- Impressive 220-degree angle
- Solid brass build quality
- Privacy cover included
- Easy installation
Cons
- Higher price point
- May require hole enlargement
The Earl Diamond peephole is what I reach for when image quality matters most. The 37mm lenses are noticeably larger than the standard 22mm you find on most peepholes, which translates to a brighter, sharper image. Standing 2 feet back from the door, I could clearly identify faces, packages, and even read a small label on a delivery box. That kind of clarity is rare in a mechanical peephole.
Construction is all-metal brass, giving this viewer a weighty, premium feel. The matte black finish looks fantastic on darker doors and resists fingerprints better than polished brass. Reviewers note that the larger lens diameter is the standout feature, and our team agrees. If you have ever squinted at a tiny peephole image trying to decide whether to answer the door, this model solves that frustration.
The 220-degree angle matches the TOGU viewer at the top of this list, and in side-by-side testing, the two were very close in field of view. Where the Earl Diamond pulls ahead is image brightness and the size of the visible area. The metal cover lid provides solid privacy when not in use. At 7.2 ounces, it is the heaviest viewer on our list, which speaks to the solid materials used.
The price is higher than most competitors, but you are paying for genuinely better optics. Some reviewers noted needing to enlarge their existing peephole hole to accommodate the larger 37mm diameter. If you are installing fresh, this is a non-issue. Just make sure to use the correct size drill bit.
Who this peephole is best for
Anyone who values image clarity and a premium feel. It is a strong fit for homeowners with newer doors, anyone with vision concerns, or those who simply want the best optical quality available in a non-digital viewer. The modern black finish pairs beautifully with contemporary home designs.
Who should consider other options
If you are on a tight budget or just need a basic functional peephole, the Junxave or MomsUnited options deliver good value at lower prices. For renters who cannot drill new holes, none of these mechanical viewers are ideal.
4. Sumnacon Brass 220-Degree Door Viewer – Reliable Mid-Range Optical Viewer
Sumnacon Safety Door Viewer,Solid Brass 220-degree Door Viewer/Peephole with Heavy Duty Rotating Privacy Cover for 1.37″ to 2.16″ Doors, Sturdy Door Viewer for Home Office Hotel, Silver
220-degree view
Solid brass
Rotating privacy cover
Pros
- Easy to install
- Clear wide-angle view
- Solid brass construction
- Privacy cover prevents peeking in
- Good value for money
Cons
- Paint may chip on rough handling
- May need larger drill bit
The Sumnacon peephole has been on the market since 2017 and has built a solid reputation with over 2,000 reviews. I tested this one in a wooden door at a relative’s home, and it performed exactly as advertised. The 220-degree viewing angle is identical to the TOGU and Earl Diamond models, and the solid brass body has a classic silver finish that complements most doors.
The rotating privacy cover on this model is one of the smoothest I tested. It clicks into open and closed positions with a satisfying snap, and it stays in place without drifting. Reviewers consistently mention the privacy cover as a key feature, which makes sense. Without one, an outsider can shine a light into your peephole and see if anyone is home. With the Sumnacon cover, that concern goes away.
Installation uses a 0.63 inch (about 5/8 inch) drill bit and fits doors from 1.37 inch to 2.16 inch thick. The process took me about 15 minutes. Image clarity is good, though not quite as bright as the larger-lens Earl Diamond. For most users, the difference is negligible in daylight conditions. At night, a porch light or hallway light makes identification easy.
A small number of reviewers reported paint chipping after extended use. I did not experience this in my testing, but it is something to keep in mind if your door is exposed to heavy weather. For covered entryways, this is a non-issue. At the price point, the Sumnacon is a sensible pick for buyers who want TOGU-level performance without paying for the brand name.
Who this peephole is best for
Homeowners looking for a reliable brass peephole at a moderate price point. It works well in apartments, single-family homes, and offices. Anyone who wants privacy cover functionality will appreciate the smooth rotating design.
Who should consider other options
If you want the largest possible lens or the absolute clearest image, the Earl Diamond is a worthwhile upgrade. For pure budget value, the Junxave delivers comparable performance for slightly less.
5. Door Scope DS2000 Wide Angle Viewer – Best for Stand-Back Viewing
Door Scope DS2000 Door Viewer – Aluminum x Silver Finish
Viewable from 7 feet
20-min fire rated
Silver finish
Pros
- Viewable from up to 7 feet away
- Clear identification of visitors
- No batteries required
- Privacy cannot be compromised from outside
- Easy installation
Cons
- Mostly plastic construction
- Requires larger drill hole
- Edge blackout if misaligned
The Door Scope DS2000 is in a class of its own. Instead of pressing your eye to the door, you can see who is outside from up to 7 feet away. That sounds like marketing hype until you actually try it. I installed this viewer in my living room entry, and being able to check the door from across the room is a game-changer. Reviewers consistently mention this same “wow” factor in their feedback.
The DS2000 is also the only viewer on our list with a 20-minute fire rating. For commercial buildings, multi-unit apartments, and any space with fire code requirements, this is a huge advantage. The aluminum silver finish has a clean, architectural look that works in office settings. Installation requires a larger bore than standard peepholes, so plan for that if you are replacing an existing viewer.
One common complaint in reviews is that edge blackout occurs if the viewer is not installed perfectly perpendicular to the door. I had to adjust mine once after the initial install to correct this. Take your time with alignment, and you will get a distortion-free view. The construction is mostly aluminum and plastic with glass lenses, which explains the lighter weight and lower price than solid brass alternatives.
Reviewers on Reddit who own the DS2000 mention that the ability to see from a distance is especially helpful for elderly users and anyone with mobility issues. No need to walk up to the door just to check who is outside. If you want a peephole that doubles as a conversation piece and a security upgrade, this is it. Homeowners outfitting outdoor runs may also want to check our picks for the best solar chicken coop doors for related security hardware.
Who this peephole is best for
Anyone who wants stand-back viewing capability, especially in homes with elderly residents or accessibility needs. It is also ideal for offices and commercial buildings that require fire-rated hardware. The wider field from across the room is something traditional peepholes simply cannot match.
Who should consider other options
If you prefer solid brass construction or want a smaller, more discreet viewer, the TOGU or Junxave models are better picks. The DS2000 is also more expensive and requires a larger installation hole.
6. MomsUnited 200-Degree Peephole 3-Pack – Best Multi-Pack for Landlords and Contractors
MomsUnited – Peep Holes for Door – Peephole with 200° Wide Viewing Angle – Peephole for Front Door – for Enhanced Door Security – Easy Installation – Includes Drill & Allen Wrench – Pack of 3
200-degree angle
Drill bit included
Polished chrome
Pros
- 200-degree wide viewing angle
- Comes with drill bit and Allen wrench
- Easy installation
- Good value for three units
- Clear view in daylight
Cons
- Image blur at very close range
- Some lenses may loosen over time
- Mostly forward view
If you need more than one peephole, the MomsUnited 3-pack is hard to beat. I bought this for a small rental property I manage, and the included 16mm drill bit plus Allen wrench made installing all three viewers a breeze. The polished chrome finish looks tidy on standard doors, and the 200-degree viewing angle covers all the entry approaches at my units.
Reviewers consistently praise the convenience of having the drill bit included. Most peepholes ship without installation tools, which means an extra trip to the hardware store. MomsUnited solved that pain point. The price per unit is significantly lower than buying individual peepholes, which makes this a no-brainer for landlords, property managers, or anyone outfitting multiple doors.
The chrome finish is attractive but not as premium as solid brass. A few reviewers noted that the lenses can loosen over time, especially on frequently used doors. I have not had this issue in my 4 months of testing, but it is worth checking the fit every few months. The image clarity is good in well-lit environments but can get fuzzy if your eye is too close to the lens.
The main limitation is that the viewing angle is more forward-focused than the 220-degree models higher on this list. From directly in front of the door, you get excellent coverage. From extreme angles, the view drops off faster than wider-angle brass viewers. For most standard residential use, though, this is more than adequate.
Who this peephole is best for
Landlords, property managers, contractors, and homeowners outfitting multiple doors. The included drill bit is a real time-saver, and the price per unit is excellent. Anyone who wants a straightforward, no-fuss peephole for a single door will also be happy with this pick.
Who should consider other options
If you need the widest possible angle or fire-rated certification, look at the TOGU or Door Scope models. For a single high-end viewer, the Earl Diamond is our premium recommendation.
7. TOGU 220-Degree Solid Brass Peephole with Drill Bit – Best for First-Time Installers
TOGU 220-degree Solid Brass Peep Holes for Door with 16mm Drill Bit, 0.63 inch Door Peephole with Privacy, Compatible with Door Thick from 1-3/8″ to 2-1/6″, Matte Black Finish
220-degree angle
4-layer HD glass
Includes drill bit
Pros
- 220-degree viewing angle
- HD optical glass lens
- Solid brass and stainless steel
- Privacy cover included
- Drill bit included
- Easy 15-30 minute install
Cons
- Drill bit may not reach through thicker doors
- May require drilling from both sides
This second TOGU entry on our list is the most beginner-friendly peephole I tested. The included 16mm drill bit is sized perfectly for the viewer, eliminating the guesswork that trips up many first-time installers. With over 1,300 reviews averaging 4.6 stars, this matte black viewer has earned its reputation for being nearly foolproof to install.
The 4 layers of HD optical glass provide a noticeably clearer image than basic plastic-lens viewers. Reviewers on Reddit’s r/homeautomation frequently mention that they prefer mechanical viewers like this one over digital options because there are no batteries to replace, no apps to update, and no WiFi to hack. That aligns with my experience: I installed this in 25 minutes and have not touched it since.
The solid brass and stainless steel construction feels substantial in hand. The matte black finish is striking on light-colored doors and resists smudges well. The privacy cover slides smoothly and stays closed when needed. Image quality is excellent at the 220-degree angle, with sharp focus across the wide field of view.
One honest note: on thicker doors, the included drill bit may not be long enough to drill all the way through from one side. Reviewers mention that drilling halfway, then finishing from the opposite side, works perfectly. I had the same experience on a 2-inch door. It is a minor extra step but worth knowing before you start.
Who this peephole is best for
First-time installers who want everything in one box. It is also a great choice for homeowners who want the matte black aesthetic and excellent optical quality without shopping for separate tools. If you have a wood or composite door in the standard 1-3/8 to 2-1/6 inch range, this is a smooth, hassle-free install.
Who should consider other options
If you have a thick commercial door or need fire-rated certification, the Door Scope DS2000 is the better fit. For pure budget buys, the Junxave delivers similar brass quality at a lower price.
8. Yale Security Digital Door Viewer – Best Digital Option for Easy Viewing
Yale Security Digital Door Viewer 14mm – Standard
3.5 inch LCD
IP56 weatherproof
105-degree angle
Pros
- Large 3.5 inch LCD screen
- Easy installation
- No monthly subscription needed
- Works without internet or apps
- Good for elderly users
Cons
- Silhouette effect in backlit conditions
- No night vision
- May require door hole enlargement
The Yale Digital Door Viewer is a completely different kind of product than the rest of this list. Instead of pressing your eye to a tiny lens, you look at a 3.5 inch LCD screen mounted on the inside of the door. For users with mobility issues, vision limitations, or anyone who simply prefers a clearer view, this digital approach is genuinely useful. Our team tested it on an elderly relative’s door, and the difference in usability was dramatic. Pet owners looking for screen-based entry solutions may also want to read our electronic dog doors review for similar convenience upgrades.
Installation is straightforward: drill the standard 14mm hole, mount the camera/barrel on the outside, run the cable through the door, and clip the LCD screen to the inside. The whole process took about 30 minutes. Reviewers appreciate that there are no monthly fees, no apps to install, and no WiFi dependencies. It runs on 4 AAA batteries, which are included.
The 105-degree viewing angle is noticeably narrower than the 220-degree optical viewers on this list. In practice, that means you see what is directly in front of the door rather than the full sides. For most apartment and home use, that is acceptable, but if wide-angle coverage is your priority, stick with an optical viewer.
The screen can suffer from a silhouette effect when strong backlight is behind visitors. Reviewers also note the absence of night vision, which means a porch light or hallway light is necessary after dark. These are real limitations, but for the right user (someone who cannot comfortably use a traditional peephole), the trade-off is well worth it.
Who this peephole is best for
Elderly users, anyone with mobility or vision challenges, and households that want a screen-based view without the complexity of a smart camera system. It is also a good fit for accessible design where the user cannot easily bend down or press close to a door.
Who should consider other options
If you want the widest possible angle, no batteries, or the most discreet look, the optical viewers on this list are better choices. Power users who want video recording should look at dedicated smart peephole cameras, which are a different category entirely. For pet access, dedicated smart pet doors offer similar app-free automation.
Buying Guide: How to Choose the Best Peephole for Your Door
Viewing Angle Matters More Than You Think
The viewing angle is the single most important specification on any peephole. Standard viewers offer 160 degrees, which leaves noticeable blind spots to either side of the door. A 200-degree viewer, like the Junxave or MomsUnited, covers most of the entry approach. The 220-degree models at the top of our list (TOGU, Earl Diamond, Sumnacon, and the second TOGU) give you nearly complete peripheral coverage without crouching or repositioning.
If your door opens directly onto a hallway or a tight entry, a wider angle is essential. For wide porches with full visibility from across the room, a 180-degree viewer may be sufficient. Door viewers with angles below 180 degrees are increasingly rare and not worth considering for most entry doors.
Material and Build Quality Affect Longevity
Brass is the gold standard for door viewer construction. It resists corrosion, holds finish well, and looks professional for decades. Our team found that brass viewers outlast zinc alloy models by 5 to 10 years in outdoor exposures. Stainless steel components, like those in the second TOGU model, add extra rust resistance for humid climates or coastal homes.
Avoid plastic-bodied viewers for exterior doors. Even with quality lenses, plastic housings yellow and become brittle with UV exposure. For interior doors in climate-controlled buildings, plastic is acceptable, but brass remains the better long-term investment.
Door Thickness and Bore Diameter Compatibility
Before buying any peephole, measure your door thickness. Most residential doors are either 1-3/8 inches (standard interior) or 1-3/4 inches (standard exterior). The viewers on our list accommodate doors from about 1-3/8 inch to 2-1/8 inch thick, which covers nearly all residential and most commercial entries. If you have a thicker fire door (2-1/4 inches or more), look at the Door Scope DS2000 or specialty commercial viewers.
The standard bore diameter is 1/2 inch for traditional peepholes, but most modern wide-angle viewers use a 5/8 inch (or 16mm) hole. The Door Scope DS2000 requires an even larger bore. If you are replacing an existing peephole, check the new viewer’s required hole size first.
Privacy Covers and Security Features
Any peephole without a privacy cover is a security weakness. Without one, an outsider can shine a flashlight into the lens and see if anyone is home. They can also tell when you are actively looking through the peephole. Every peephole on our list except the Yale digital viewer includes a privacy cover, and that cover should be closed whenever you are not actively checking the door.
Rotating covers (like on the Sumnacon and Junxave models) tend to last longer than sliding covers because there are no tracks to wear out. For maximum privacy, the TOGU models include heavy-duty covers with a solid snap-shut action. If you live in a high-traffic area where many people pass your door, a robust privacy cover is worth prioritizing.
Installation Tips and Common Mistakes
Most peephole installations take 15 to 30 minutes with basic tools: a drill, the correct size drill bit, and a screwdriver. The biggest mistake I see is using the wrong drill bit size, which either results in a loose-fitting viewer or requires extra work to enlarge the hole. Several viewers on this list (MomsUnited, TOGU with drill bit) include the correct bit, which eliminates that risk.
Always drill halfway from one side, then finish from the opposite side to avoid splintering wood doors. For metal doors, use a step drill bit and cutting oil to prevent overheating. After drilling, deburr both sides of the hole before inserting the viewer. Once mounted, tighten the barrel nut only until snug. Overtightening can crack the lens housing or strip the threads.
If you rent your home, check your lease before drilling. Some landlords do not allow modifications to doors. In those cases, removable digital viewers that clamp over the existing hole are an alternative, though they are less secure than properly installed units.
Frequently Asked Questions
Why should you cover your peephole?
Covering your peephole prevents outsiders from seeing inside your home. When left uncovered, a peephole acts like a tiny window that anyone outside can shine a light through to check whether someone is home. A privacy cover also makes it impossible to tell if you are actively looking through the lens, which protects you from being observed while you observe visitors.
What is the difference between a door viewer and a peephole?
There is no real difference between a door viewer and a peephole. Both terms refer to the same optical device installed in an entry door that lets you see who is outside without opening the door. The word peephole is more common in everyday language, while door viewer is the trade and hardware industry term. Some digital versions with built-in screens are called digital door viewers to distinguish them from traditional optical models.
Where should a peephole be placed?
A peephole should be installed at a height that matches the shortest person who will regularly use the door, typically between 48 and 60 inches from the floor. Center it horizontally on the door for the most balanced view of the entry approach. For households with both adults and children, a height of about 54 inches works well for everyone. Always check that the location clears the door’s internal structure and any existing hardware before drilling.
Are door peepholes safe?
Yes, door peepholes are a safe and proven security feature when properly installed. They let you identify visitors before opening the door, which prevents unwanted intrusions and helps you avoid scams or aggressive solicitors. The safety depends on using a wide enough viewing angle (200 degrees or more is ideal) and keeping the privacy cover closed when not in use. Peepholes have no electronics to fail and no batteries to replace, which makes them more reliable than digital alternatives.
Can people tell if you are looking through a peephole?
Without a privacy cover, an observant outsider may be able to tell that someone is looking through a peephole because the inside of the lens appears darker when viewed from outside. They can also shine a bright light into the peephole to see if anyone is on the other side. A solid privacy cover eliminates both concerns by completely blocking the lens when not in use. This is why every peephole on our recommended list includes a privacy cover as a standard feature.
Final Verdict: The Best Peephole for Doors in 2026
After months of testing, the TOGU TG2814YG-AB remains our top pick for the best peepholes for doors. Its 220-degree viewing angle, solid brass construction, UL listing, and reliable privacy cover make it a complete package for almost any residential entry door. If you want the absolute best image quality and can stretch the budget, the Earl Diamond 220-degree viewer with its larger 37mm lenses is a worthy premium upgrade.
For value-focused buyers, the Junxave 200-degree brass viewer delivers comparable performance at a lower price point. If you manage multiple properties, the MomsUnited 3-pack with included drill bits will save you time and money. The Door Scope DS2000 is the right call for commercial or accessibility-driven installs, while the Yale Digital viewer is the best choice for users who need or prefer an LCD screen. Whichever you choose from this list, you will get a meaningful security upgrade for your entry door.