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Kasa Smart Motion Sensor & Dimmer Switch
$18
$35
48% off
Amazon
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AmazonDeal Details
Amazon has Kasa Smart Motion Sensor & Dimmer Switch (ES20M) for $18.23. Shipping is free with Prime or on $35+ orders.
Thanks to Deal Hunter phoinix for finding this deal.
Thanks to Deal Hunter phoinix for finding this deal.
About this item:
- Motion-Activated Lighting: Automatically turns lights on with motion and off after a preset time
- Daylight Sensor: Prevents lights from turning on during daytime
- Smart Dimming: Adjustable brightness from 1% - 100% with custom schedules
- Voice & App Control: Works with Alexa, Google Assistant, SmartThings, and the Kasa app
- Away Mode: Random on/off scheduling for home security
- Safe & Reliable: UL certified; supports up to 300W incandescent or 150W dimmable LED
- Smart Ecosystem: Integrates with other Kasa devices for automation
- Easy Setup: App-guided installation; requires neutral wire and 2.4 GHz Wi-Fi
Editor's Notes
Written by qwikwit | Staff- Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
- If you're not a student, there's also a free 1-Month Amazon Prime trial available.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Kasa Smart Motion Sensor & Dimmer Switch (ES20M) for $18.23. Shipping is free with Prime or on $35+ orders.
Thanks to Deal Hunter phoinix for finding this deal.
Thanks to Deal Hunter phoinix for finding this deal.
About this item:
- Motion-Activated Lighting: Automatically turns lights on with motion and off after a preset time
- Daylight Sensor: Prevents lights from turning on during daytime
- Smart Dimming: Adjustable brightness from 1% - 100% with custom schedules
- Voice & App Control: Works with Alexa, Google Assistant, SmartThings, and the Kasa app
- Away Mode: Random on/off scheduling for home security
- Safe & Reliable: UL certified; supports up to 300W incandescent or 150W dimmable LED
- Smart Ecosystem: Integrates with other Kasa devices for automation
- Easy Setup: App-guided installation; requires neutral wire and 2.4 GHz Wi-Fi
Editor's Notes
Written by qwikwit | Staff- Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
- If you're not a student, there's also a free 1-Month Amazon Prime trial available.
Community Voting
Deal
Score
+45
Good Deal
Bad Deal
Top Comments
I had tons of problems with this model the most, ES20M. You check Reddit and you will find others with issues.
All the 100 switches were happier when they are on their own vlan. The vendor even told me to do that. I created a vlan just for one of the ES20M and it still locked up. Make sure your WiFi is only 2.4 for them.
Community Reviews
The Kasa ES20M motion sensor switch is best for hands free lighting and automation, especially in bathrooms, closets, hallways, laundry rooms, garages, and kitchens. It can trigger lights or fans on motion, then dim or shut them off on a timer, with useful schedules like lower brightness at night and full brightness in the morning. The convenience angle comes through clearly, and the price is often compared favorably with other motion or dimmer switches. The main concern is reliability, with repeated reports of lockups, fail closed behavior, and firmware problems that sometimes require a breaker reset or replacement.
The switch supports brightness scheduling so lights can ramp to different levels at set times.
The motion sensor can trigger lights on and then turn them off automatically using timers and schedules.
The minimum brightness behavior can help reduce glare during nighttime bathroom trips.
The automation setup can reduce manual switching by turning lights on and off based on presence.
The device can be configured for longer fan or accessory follow-up after motion detection.
Firmware can cause lockups and non-responsive behavior that may require manual restart or breaker resets.
Some failures can leave the switch stuck in a closed state, preventing manual power-off when lights remain on.
Reliability issues can be worse for early batches and some 3-way setups, with ES20M singled out for problems.
Connectivity and network compatibility can be fragile, including guidance to use 2.4 GHz Wi‑Fi and VLAN isolation.
Firmware update behavior can be confusing because the app may not show build numbers clearly, making it hard to verify patches.
Common Questions (5)
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62 Comments
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So more like 45.
So if you want to keep the light on you have to turn off the motion sensor setting in the app. There is not even a way to use the app or any of the smart integrations to make it stay on.
And with Matter
How are you liking Unifi? I am liking it but spend days doing firewall rules with Adguard, HA, and things...
No issues or less issues with the other models. The real pain was this model.
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So yeah don't approach this as if it's going to save money.
Just advice. People might be using these for convenience but others for saving money by automatically turning lights off (e.g. kid proofing). I'm just pointing out that using a motion switch to save money is unlikely to actually pay for itself because of LED.
would not use the dimmer on ceiling fans tho - will probably get very hot at low dim settings.
have one of these for stair lights with bright bulbs that are dimmable for evening/might time.
honestly tho, I prefer the Lutron switches w/ motion sensors for closets, pantry, mudroom, entry ways - they are not smart and don't need to be, but what they are is bulletproof reliable with MUCH better motion sensors (wider angle, more sensitive, resistant to humidity) that work 100% of the time.
They had a replacement firmware right away, which shows they knew it is an issue. I have no clue why they don't push this firmware to everyone. They remotely updated my switches based on MAC. Another thing that bothers me is the firmware version. They are so lazy the reused the same minor number and the app does not tell you the build number. So in the app you do not know the real build. I thankful took a screenshot to know what build improved my switches.
v1.1.6 (Build 251212, Rel.094746).
I will not buy this brand of switches for my next house. Too many issues, they keep removing features, and staff.
the ES20M I have Hardware version 1.0 and still on the old Firmware 1.0.9
Not going to upgrade because it did not help last time, unless the latest one really fixed the freeze up issue!
I would replace it with another big brand but there isnt out there (Motion + Dimmable + Smart all in one) for now.
They have huge FW problems and they know it. For some reason they don't want to fix it unless you create a ticket. Even than it has problems. The stock FW has a memory leak and it locks up. The switch will fail in either positions and the manual switch will stop working. This is a huge fire hazard and breaks local code.
Do not buy their switches. Their switches has several issues and not worth any price. So sad, since it started so strong 6 years ago.
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