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popularphoinix | Staff posted Yesterday 11:25 PM
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popularphoinix | Staff posted Yesterday 11:25 PM

$18.23 | Kasa Smart Motion Sensor Switch (ES20M) at Amazon

$18

$35

48% off
Amazon
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Deal Details
Amazon [amazon.com] has Kasa Smart Motion Sensor Switch (ES20M) for $18.23.
Shipping is free with Prime or on $35+ orders.

Price
$16.76 lower (48% savings) than the list price of $34.99
$5.46 lower (23% savings) than the previous price of $23.69

Customer reviews
4.4⭐ / 6,757
300+ bought in past month

amazon.com/dp/B09NMX9N24 [amazon.com]

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Product Info
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About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon [amazon.com] has Kasa Smart Motion Sensor Switch (ES20M) for $18.23.
Shipping is free with Prime or on $35+ orders.

Price
$16.76 lower (48% savings) than the list price of $34.99
$5.46 lower (23% savings) than the previous price of $23.69

Customer reviews
4.4⭐ / 6,757
300+ bought in past month

amazon.com/dp/B09NMX9N24 [amazon.com]

My other deals

Community Voting

Deal Score
+13
Good Deal
Get Deal at Amazon

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Model: Kasa Smart Motion Sensor Switch, Dimmer Light Switch, Single Pole, Needs Neutral Wire, 2.4GHz Wi-Fi, Compatible with Alexa & Google Assistant, UL Certified, No Hub Required(ES20M) White 1-Pack

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Sort: Lowest to Highest | Last Updated 1/11/2026, 04:43 AM
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15 Comments

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Yesterday 11:42 PM
835 Posts
Joined May 2006
sloepokeYesterday 11:42 PM
835 Posts
Earn 25% back on this item when you pay with your Prime Visa. Also good on the two-pack.
1
Today 01:14 AM
57 Posts
Joined Nov 2010
yoshis007Today 01:14 AM
57 Posts
Quote from sloepoke :
Earn 25% back on this item when you pay with your Prime Visa. Also good on the two-pack.
Not seeing the 25% cashback on prime visa. Midwest here.
Pro
Today 02:05 AM
2,157 Posts
Joined May 2010
artcab
Pro
Today 02:05 AM
2,157 Posts
Quote from yoshis007 :
Not seeing the 25% cashback on prime visa. Midwest here.
https://www.amazon.com/l/17985366...B09NMX9N24
Today 02:14 AM
301 Posts
Joined Aug 2016
photodoctorToday 02:14 AM
301 Posts
Why does a motion sensor switch need to be a smart switch?
3
Today 02:24 AM
1,123 Posts
Joined Nov 2017
spittlbmToday 02:24 AM
1,123 Posts
Quote from photodoctor :
Why does a motion sensor switch need to be a smart switch?
Bathroom fan
Pro
Today 03:00 AM
39,336 Posts
Joined Nov 2005
Dr. J
Pro
Today 03:00 AM
39,336 Posts
Really think about your application and if it will ever pay back. Let's call this $20 for the sake of easy numbers. For me, and I pay $0.28/kwh which is very high, that's 71kwh payback. If this controls a 10watt LED then the switch, assuming it lasts that long, needs to save 7142 hours of runtime to pay for itself which is about 300 days.

So yeah don't approach this as if it's going to save money.
3
Today 03:07 AM
50 Posts
Joined Dec 2025
MagentaDesk1020Today 03:07 AM
50 Posts
Quote from Dr. J :
Really think about your application and if it will ever pay back. Let's call this $20 for the sake of easy numbers. For me, and I pay $0.28/kwh which is very high, that's 71kwh payback. If this controls a 10watt LED then the switch, assuming it lasts that long, needs to save 7142 hours of runtime to pay for itself which is about 300 days. So yeah don't approach this as if it's going to save money.
uh what, this is for the convenience...no one is trying to save cost with this (even though it does). i don't have to touch the light switch when i open the closet door for instance

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Today 03:15 AM
117 Posts
Joined Sep 2019
T013yToday 03:15 AM
117 Posts
I purchased 8 of these switches 2 years ago. I thought they would work great and all-in-one, I was wrong.

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.
2
1
Today 03:21 AM
4,369 Posts
Joined Jan 2011
carlson03Today 03:21 AM
4,369 Posts
Quote from T013y :
I purchased 8 of these switches 2 years ago. I thought they would work great and all-in-one, I was wrong. 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.
I have tons of their regular, 3 way and dimmer switches, plus the plugs, never once have they locked up
1
Today 03:27 AM
572 Posts
Joined Feb 2016
RacerXXYToday 03:27 AM
572 Posts
Quote from photodoctor :
Why does a motion sensor switch need to be a smart switch?
I was thinking the exact same thing. Then I saw the reply to you about using it for a bathroom fan, and I still don't get it.
1
Today 03:33 AM
50 Posts
Joined Dec 2025
MagentaDesk1020Today 03:33 AM
50 Posts
Quote from RacerXXY :
I was thinking the exact same thing. Then I saw the reply to you about using it for a bathroom fan, and I still don't get it.
it's nice to have it turn to minimum brightness when getting up to pee in the middle of the night
1
Pro
Today 05:42 AM
3,870 Posts
Joined Feb 2010
SumDuud
Pro
Today 05:42 AM
3,870 Posts
Quote from photodoctor :
Why does a motion sensor switch need to be a smart switch?
Why does any switch? "Need" is based on personal choice. There could be rules in the app, scenes, whatever. If YOU can't think of a reason then it probably isn't for you.
Today 06:38 AM
117 Posts
Joined Sep 2019
T013yToday 06:38 AM
117 Posts
Quote from carlson03 :
I have tons of their regular, 3 way and dimmer switches, plus the plugs, never once have they locked up
The 3-ways had their issues and first batch was the worst. Those are working good enough for me. The single pole, switches are fine.

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.
Today 06:43 AM
114 Posts
Joined Oct 2021
LivelyWallaby1957Today 06:43 AM
114 Posts
Quote from photodoctor :
Why does a motion sensor switch need to be a smart switch?
The smart part is for the settings like post-sensor timer and light brightness at a certain time of day or night. You can set it to be on when you shower and then say you want the fan to stay on for 2 mins after you walk away, or any amount of time to clear smells from the toilet area or humidity.

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Today 06:46 AM
117 Posts
Joined Sep 2019
T013yToday 06:46 AM
117 Posts
Quote from photodoctor :
Why does a motion sensor switch need to be a smart switch?
So many reasons.
You can program for what routines you would like. Check Home Assistant or other controller apps.

I like the lights to turn different brightness depending the brightness of the room and time of day. All based on presence. It is so nice to walk into a space and not need to touch anything. Than the lights just turn off automatically.

Unlimitedly mmWave is better and you will learn you might want that.

Is any of this NEEDED, nope. Is it nice to have things automated and remote, yes.

Holiday decorations is also a nice thing.

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