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At a glance
ProductD-Link Komfy (DKZ-201S)   [Website]
SummaryWall switchbox mounted 1080p cloud camera with night vision and 130° wide angle lens
Pros• Has air quality, temperature and humidity sensors
• Can control two light switches (or outlets)
• Can record to SD card
• Audio and motion detection
Cons• No Android app, yet. Setup requires iOS device w/ Bluetooth 4.0
• Motion detection has very few customizable attributes
• Tight fit in many switch boxes
• Switchbox only mounting may not provide the view you want

Typical Price: $150  Buy From Amazon


The Komfy Switch with Camera by D-Link is definitely different than any network camera I have looked to date. It's designed to replace one or two single pole light switches (sorry, no 3-way switch support), adding video surveillance to supplement the original switch functions.

Komfy comes in white (model DKZ-201S/W) and black (model DKZ-201S/D). The pads above and below the camera are push on / push off switches that replace up to two toggle light switches, so you still have manual control of the switches. But you'll have to retrain yourself to the new above / below switch positions vs. the original side-by-side.

Komfy - Two colors

Komfy - Two colors

There is a microSD card, which is only accessible with the faceplate removed. Other than that, the design is pretty clean looking, but definitely obvious that it contains a camera.

Komfy callouts

Komfy callouts

Included in the box is the camera itself, a wall mount plate, switch covers, 4 screws, 5 wire nuts, labels for your home wiring, and the Quick Start Guide that shows you how to wire it into AC mains power.

I've included the specs for the Komfy below. I decided not to list anything with it because, well, no other cameras directly compete with it. The table below shows the key information I collect for cameras, left blank if the info wasn't available.

  D-Link Komfy
Price $249.99
Resolution 1080p auto-adjusted, all my videos downloaded in 1280x720
Megapixel 3
Compression H.264
Horizontal field of view 130°
Vertical field of view 64.6°
Audio One-way
Night vision? Yes
Number of IR LED's 6
Record to SD card Yes
Record to network share No
Record to cloud Yes
Wireless 802.11g/n wireless (2.4 GHz only)
Ethernet No
Pan/tilt/zoom 2x Digital
Can integrate w/ other systems No
Table 1: Feature Summary

I went to grab the FCC pictures of the Komfy components, but D-Link's short-term confidentiality period has not yet expired. I'll leave disassembly and component identification for another time.


Setting up Komfy was interesting. When looking to replace some light switches with a camera-mounted light switch, the first problem you run into is a limited selection of places to install it. In my case, a very limited selection.

Turns out most of the switches in my house face adjacent walls, which would make for very uninteresting video. Bedrooms tended to have more open switches, but mounting a cloud-enabled camera in the bedroom was not something I wanted to do. The image below shows a typical light switch in my home facing a wall 3 feet away.

Challenges faced installing the Komfy switch

Challenges faced installing the Komfy switch

I finally settled on a single-gang switch box that faced out to my dining and living room. Armed with wiring instructions (image below) I cut power and got to work.

Komfy wiring instructions in the QuickStart guide

Komfy wiring instructions in the QuickStart guide

Wiring up Komfy was easy enough, at least with only one switch. Even so, by the time I was done I had all of the wire from the wall connected to Komfy with 5 wire nuts that somehow had to all go back in to the box. The image below shows Komfy (not so) ready to go back into the switch box.

The Komfy switch ready to go back into the wall

The Komfy switch ready to go back into the wall

I'm no electrician, but have installed my share of light switches and Komfy was not going back into that single-gang switch box. D-Link mentions the electrical box should be at least 3"H x 2"W x 2"D. I got out my tape and measured my box at 2 3/8"D, which should be enough right? Not so much.

For a better comparison take a look at the image below of a 3"D extended box. I've put lines at 2"D and 2 3/8"D with a sharpie. The solid section on Komfy is 1 5/16"D all by itself. In a 2"D box that would give you just over half an inch to stuff 5 wire nuts, all of Komfy's wires and your home's wires. It ain't happenin' without some magic and a whole lot of luck!

Depth of the Komfy switch

Depth of the Komfy switch

Luckily, Komfy can also replace 2-gang switches. In my opinion that's where you'd want to install it. I made a trip to my local hardware store and purchased a 2-gang box, 1-gang box, extension cord and outlet for my testing, which you see in the image below. I simply cut the end of the extension cord and ran it into the box so I could move Komfy wherever I wanted to.

I wired the outlet to the Komfy switch wires so I could test the different features in the app, as well as IFTTT. I noted that Komfy also has a Micro-USB power jack on the left side by the SD card, so I might have been able to power it that way, but didn't try. Note D-Link's specs don't mention the Micro-USB jack.

My Komfy test setup

My Komfy test setup

Even with Komfy sitting out in the open air in its test box, I could feel the box Komfy was installed in was warmer to the touch than the outlet box beside it. I grabbed my infrared thermometer and checked both boxes. In my 70° room, the outlet side measured 70°, vs. the outside of the 2-gang box where Komfy was installed measured just around 100° near the top. This isn't something to be alarmed about, but could result in Komfy getting fairly toasty when mounted in a wall box.

The extra heat did not seem to affect Komfy's temperature sensor, which remained consistent with the thermometer I had set beside it. Even if it had, Komfy's settings allow you to calibrate the temperature sensor as shown below.

Komfy settings

Komfy settings

Back to the setup, I was finally wired up and ready to start using Komfy! Step 10 of the Quick Install Guide says "Download the Komfy App and sign up for a Komfy account." The install guide doesn't mention a specific platform, and I found no app in the Google Play store. D-Link's site mentions presently only iOS is supported and setup requires a Bluetooth 4.0 device, although you can use any iPhone 4s/iPad 2 or later iOS device after set up. I reached out to D-Link for availability of the Android app; D-Link is targeting late Q2 for an Android app.

Note to older iOS users (iPad 2 mainly), if you need to borrow a newer Bluetooth 4.0 device for setup, don't create an account on your older iOS device before setting up Komfy. I only have an iPad 2 (BT 2.1) so I figured I'd borrow my neighbor's iPad and setup Komfy. Wanting to save time once I borrowed their iPad, I decided to set up an account on my iPad2 first so I could breeze through setup and get their iPad back to them. Turns out that was a bad idea.

Komfy has an access list to make who can see the camera more secure (a truly notable quality which makes one feel much better about having a light switch on the Internet of Things). Security is via 2-way SSL authentication based on PKI (Public Key Infrastructure) and 2048 bit key length WSS Protocol (WebSocket Secure), with the Access list as a nice bonus.

Once a device is set up you can accept and remove devices from the Access List menu. But the Access List menu is not available until a device is installed, which I couldn't do with the iPad2 where I had created my account. Essentially, I was stuck at the image below.

No Access for you!

Don't setup an account on a non-BT 4.0 device before installing one Komfy or No Access for you!

There is an account reset link, but all it does is reset the password, not the Access List. Finally I gave up, abandoned my original account, and created a new account on the newer iPad. After that it was truly smooth sailing through the rest of the setup.

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