KH03 Dimmer
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Wi-Fi Enabled Smart Dimmer


Support Voice Control

Comply with Apple HomeKit technology. Remotely control Koogeek Smart Dimmer with your iPhone, iPad, iPod touch or Apple Watch.

Easy Pairing & Easy Installation

Using 2.4GHz Wi-Fi to easily pair with and control the switch. Operate the Koogeek Smart Dimmer without complicated installation


Provide advanced security by end-to-end encryption and authentication between a HomeKit-enabled accessory and your iPhone, iPad, or iPod touch.

Create Scenes to Control Multiple Accessories

Scenes enable you to control multiple accessories at the same time. Turn a scene on or off by tapping it, or just asking Siri.


Adjust the brightness via manual operation or Siri voice commands.

High-quality Material

Adopt V-0 grade flame-retardant PC panel.

Over-heat & Over-current Protection

The dimmer will automatically cut off when the internal temperature reaches 85℃ or the current is over 12A.

Monitor Power Consumption

Monitor real-time, daily and monthly electric power consumption via the app.

Remote Control even away from Home

You can set up your Apple TV (4th generation or later with tvOS 10 or later) or iPad (running iOS 10 or later) as a home hub and control Koogeek Smart Dimmer even when you're away from home.

Learn more >

Easy Installation

Watch the product film

WARNING! This is an electrical shock hazard. Please call a professional electrician if you are unfamiliar or uncomfortable with electrical work.

Intelligent Control Panel

Adopt industrial-grade IOT chip with low-power consumption from 0.75W to 1 W.

  • High-polished PC panel
  • Inching switch can withstand up to 50,000 times of press and work up to 10 years.
  • Intelligent Control Panel adopts industrial-grade IOT intelligent chip with low-power consumption from 0.75W to 1 W.
  • In-wall back panel
  • By A***********February 15, 2018 22:42:33

    Excellent when combined with Apple home.

  • By a******February 14, 2018 22:24:48

    Works pretty good and very reliable, easy to connect, works with apple home kit

  • By M******February 13, 2018 21:41:35

    I've recently got really into home automation, and this is great to have. I already have a few smart switches around the house which control the lamps and other lights, but it's great to have something like this for the regular lights. It's easy to install and connect to the phone, works great so I have nothing but good to say about it.

  • By T************February 12, 2018 18:32:26

    This is an excellent switch that works great with my iphone and newer ipad air. I set this switch up at my buddys places as he is automating his house. Even with old wiring and some kind of connection he uses to get rhe old wiring connect ro some adapter thing which then in turns helps old wiring work with automation. The installation of the switch was not too difficult. Had to try it couple times to get it work but eventually it did without lot of fuss. I would recommend this switch specially in moddrn houses with new wiring as it is wirking great since past 3 days now with no problem and with homepod coming this will hopefully work with it as well.

  • By J********February 11, 2018 22:37:24

    This smart switch is really cool. It's easy installation just please turn off the circuit breaker first before doing the electrical. It's 100-120v ac alternating currenT and has 3 wires. I'd suggest to take a picture of your old switch internals before installing this one for reference. You must be on wifi for this to work and download the Koogeek app. Adding the device I had to restart the app a few times but it's working great now. I can use it to control multiple different koogeek devices and they work great. Perfect for anyone wanting to create a smart house. I can have the lights turn on in the driveway before walking into the house. A big plus for me.

  • By L*******February 11, 2018 18:22:34

    This is the first Koogeek product that I’ve purchased and I love it. Set up was easy. I have it controlling four flood lights in the vaulted ceiling of our living room. The dimming is smooth and controlled, whether Siri is in control or you are controlling it from the switch itself or virtually from the app. The power consumption feature in the app is interesting but i have not really utilized it to a great extent. For dimming you can tell Siri what percentage to turn the lights on at or when it is already on and that’s really handy. As well, the virtual slider on my iPhone and iPads make it easy to dial in the dimming. If I have a complaint it is that there are not two properly placed screw holes for a two or more gang wall plate. I have it in a double box and only the other switch is holding the cover plate on. Minor detail but it comes with its own cover if you are using in a single box.

  • By D***************February 10, 2018 20:18:16

    Glad these guys decided to give us 2 switches in a single place unit. Very good product for the money. Easy to install and connect to the app. Has worked dependably. Love being able to schedule lighting. I leave for work early in the morning and now when I see my sons have left the backyard lights on (AGAIN), I can turn them of from my truck. Very helpful in keeping the electric bill in check. Power monitoring through the Koogeek app is also nice.

  • By H*******February 10, 2018 03:53:58

    Works as promised, very easy setup with HomeKit - no need to download Koogeek app. Downside as mentioned before in other reviews is that the switch is not the standard Decora shape, if added to a multi-gang box the plate cover will not fit. This design chose doesn’t make allot of sense.

  • By L*************February 8, 2018 20:58:42

    Very good product! Does it's job . Easy setup. Ordering more of these!

  • By MFebruary 8, 2018 02:05:29

    Works great. Only product connected to my Apple HomeKit that has NOT needed fine tuning or reinstalkation. I’m looking to buy a couple more

  • By M********February 6, 2018 21:20:42

    This switch is excelent. I used it in my office and works fine with led bulb tubular. Wifi connection is required and I can turn off it from my home.

  • By K**********February 5, 2018 20:01:15

    Great product and worked as advertised. Integrated right into HomeKit with no issue. The only reason I didn't give it 5 stars is that it doesn't fit a standard decora wall plate. If you only have one to replace, it's no big deal, but I was putting it in a 3 gang box and couldn't use it with the existing cover plate.

  • By B**********February 5, 2018 00:39:01

    This wasn't as easy to program like I thought it would be. My daughter has the iPhone and the Apple Watch and it took a few times to get it to connect, but it kept dropping connection. Not sure why that happened. We tried to use my granddaughters iPhone 7 to try and , it connected, but once again it dropped the connection. We are gonna keep it bcuz it's a cool gadget. We just have to be patient with setting it up. Lol. I live talking to Siri on any device, so that's a plus with this being voice activated. I would recommend this purchase to everyone!! It's not like the switch plate is overly big and out of place.

  • By Z********February 2, 2018 03:22:02

    Had these for months and they all work perfect. Haven't had any issues with any of the ones I have installed.

  • By D*************January 23, 2018 01:26:51

    This was my third bit of smart home tech from Koogeek. I have purchased this as an addition to my smart home devices, and compared to some of the other products on the market, the ease of use and setup are very good. The Koogeek app also integrates EXTREMELY well with Homekit devices - which was a big selling point for me.

  • By J**************January 21, 2018 23:17:36

    I have this set up on a ceiling fan in my living room. It doesn’t adjust the speed. It is either on or off. Which I knew that. I’m just telling others. My house gets hot in the day and parts of the night. I need his fan to circulate the air so it doesn’t become stratified in the upper living area. I’m using the app and Homekit to turn it on and off during different parts of the day. It works great. I’m much more comfortable now!

  • By J***January 18, 2018 19:17:35

    Got a Smart Home device? This one is a great addition. Replacing switches with smart Wifi switches is a better option for a smart home than using plugs. Plugs usually connect to lamps that also work by hand - and it's tempting for turn them off/on using those "old school" ways (old habits die hard). When replacing a wall switch, you can power devices on/off using the wall switch from either the wall switch (as you always have). The Koogeek wall switches, more specifically.

  • By A***January 18, 2018 03:52:06

    I really enjoy home automation. It just makes it easier to be able to control and monitor devices in your home from your mobile phone. I also love being able to call out to my voice assistants (Siri) and have them switch devices on and off. This light switch is another item from Koogeek that makes these home automation tasks possible. I've used several Koogeek products before and they make life just a little easier at home. For the most part, the Koggek items are plug and play, but this wall switch has to be hard wired into the wall. Installation is pretty straightforward and not unlike standard wall switches. There are three wires that come out the back of the unit -- load, neutral, and line. The wall switch is a nice addition to my home set-up.

  • By j******January 16, 2018 20:40:03

    It's been two weeks so I think it's time to write a fair review. Be aware that you need a nutural wire at the switch. This is easy to add for a electrician if you don't. Most switches have a hot and switch leg. You will need a 3rd wire and an optional ground wire. I love the touch to activate surface. Just tap and your light is on or off. The linking to Apple HomeKit was fast and simple. Took about 5 minutes to link the switch and outlet which I also bought. Now for the cons It took me two hours to install and I do electrical work professionally. It would've been a five minute job but you normally don't run across homes that have a common wire in the switch plate. The electrical system here is very old so I had to run a common from the fixture box to the switch. I'm going to assume that most houses will not have a nutural wire located in the switch box. So to sum it up there is no better way to control a light that has a switch if you use the type that just screw into the socket you run into problems of people turning off the switch disabling the app from working.

  • By J***January 15, 2018 23:53:18

    The light switch works great and was easy to install. The wires from the switch are braided core and most home wiring is solid core so twisting the connections isn't perfect, though the included twist connectors work fine. Just make sure to wrap with some electrical tape just in case. It'd be nice if the switch used push-in wiring connections so that you don't need to stuff all the terminal connectors back into the junction box. You can use the Faceplate that comes with it. Homekit works perfectly and using Siri works like a charm.

KH03 Dimmer
  • Siri Controlled

    Use voice to control your device

  • Schedule

    Set schedules and timers to automate your home

  • Easy to control

    Control the Smart Light Switch from anywhere with your smartphone

  • Consumption Monitor

    Show energy consumption or electricity cost

Works with Apple Homekit
Apple homekit technology provides an easy, secure way to control homekit-enabled accessories
Siri Compatibility for Voice Control
Conveniently switch your lights on and off using Siri or with a quick tap on your iPhone.Assign a name to each Smart Switch and communicate each Switch by name when making a voice command.
Monitor Power Consumption
Check whether your Koogeek Smart Light Switch is connected properly with a standard light. Monitor its current power and state via the free Koogeek Home app.
Remote Control
You can set up your Apple TV (4th generation or later with tvOS 10 or later) or iPad (running iOS 10 or later) as a home hub and control Koogeek Smart Light Switch even when you're away from home.
Create Scenes to Control Multiple Accessories
Create individualized scenes and control multiple lights simultaneously with a single Siri voice command or a quick tap on your iPhone.
Wide Compatibility
Compatible with all single pole light switches. Not intended for use in 3-way light switches, which are controlled by more than one switch.
1. Koogeek Smart Dimmer replaces single pole switches only. Not compatible with 3-way switches, which could be controlled from multiple locations. 2. Neutral wire is required. 3. Metal faceplates are not recommended. Otherwise, it may cause harmful interference to Wi-Fi performance.
System Requirements
HomeKit requires an iPhone, iPad, iPod touch or Apple Watch with iOS 8.1 or later
Supply voltage
100VAC, 60Hz
Maximum load
120VAC, 400W for incandescent lamp; 120VAC, 200W for dimmable LED or dimmable CFL lamp
Minimum load
Switch Type
Single pole
Switch Style
Home Wi-Fi
2.4Ghz (802.11 b/g/n)
Size and Weight
  • Length: 117mm
  • Width: 70mm
  • Thickness: 45mm
  • Weight: Approx. 214g
Package contents

Koogeek Wi-Fi Enabled Smart Dimmer / 3 * Wire Nuts / 2 * Screws / Instruction Manual