I’m looking for suggestions for occupancy sensors. When the room is unoccupied for “xx” minutes, the light will shut off.
I’m not looking for a hardwired switch, but a wall mounted battery sensor. Does this exist?
Thanks!
Aqara FP300 Battery Zigbee/Thread/Matter Human Presence Sensor
Tapo T150 Battery Human Presence Sensor
Lafaer LWR01 Battery Matter Human Presence Sensor
Like the Tapo T150 or Aqara FP300 (both M/T).
I don’t trust Aqara calling theirs ‘matter enabled’.
1 Like
Typically, this type of use case would use way too much battery for a battery powered device because it basically has to be monitoring continuously.
Several of them have been promised in the last year, but I don’t think any have come to market yet. 
Good to know. What powered devices are on the market? I’m still learning as I go
There are several options for mains powered mmWave sensors. See the FAQ:
FAQ: Best mmWave Sensor to Use with ST? (human presence sensor/occupancy sensor)
The Tapo T150’s battery is said to last three years.
They said up to 3 years, but that’s still pre-release discussion, right? Can you buy that one anywhere yet?
We’ve seen several devices which promised two or three year battery life in their pre-release descriptions, but once they were available in the field, typical use had a battery life of about six months. 
But we’ll see.
1 Like
As always: I’ll get one as soon as it’s available and report back to you.
Everything else is speculation…
2 Likes
Homeseer has a multisensor that can be plugged in. It is Zavel, so keep that in mind. It has other features as well, although note the lux sensor has a bug and a design defect if you use it. Amazon.com: HomeSeer HSM200 Z-Wave Multi-Sensor (Motion, Temperature & Light) with RGB LED Indicator for Smart Home Automation, Line Powered, Plugs Into Standard Outlet, S2 Security : Electronics
the ZG-204ZM is a battery operated PIR + mmWave radar.
Using 4 of these sensors for some months now. Is a little tricky to get the right sensitivity settings and you need a tuya zigbee gateway to setup. You can give a try.
This is a sensor in my bedroom:
The sensor stayed as “movement detected” all the time that has someone sleeping in the room, and don’t get triggered again until there is no one:
Tuya Zigbee mmWave Sensor - Devices & Integrations / Connected Things - SmartThings Community
2 Likes
Homeseer has a multisensor that can be plugged in.
That’s a nice zwave sensor (I have two) but it’s not what is usually considered an occupancy sensor. It’s a PIR motion sensor.
The difference is that these days there are many true occupancy sensors available, which typically use MM wave technology so that they can even detect a person sitting perfectly still just from their breathing.
The homeseer sensor (which is actually rebranded from another brand), can’t do that. It just detects when someone new comes into a space and crosses the detection zone. But if they then sit still for a while, it won’t know that the person is still there.
So it just depends on the details of the use case.
1 Like
I keep forgetting about that one! Thanks for posting.
From the reports I’ve seen it’s working as a decent occupancy sensor when paired with a Tuya hub, but many people, although not all, have not been getting good occupancy reports when paired with a smart things/aeotec hub. Not sure what’s going on there.
I think the thing is that you first need to pair it with a tuya hub and configure the sensitivity settings. Then you can pair with the smartthings hub.
Thats what i’ve done.
4 Likes
I do like my Meross MM wave sensor, but I wanted to try the battery operated occupancy sensor. So picked up a couple of them and they just arrived. After some testing and reading through that other post I realized I needed a Tuya hub to properly configure them to optimize the occupancy sensor. I like the size of them. I hope the battery life is decent. Now ordering the Tuya hub. Great another hub. 
1 Like
It might be worth buying a hub that supports Matter (Matter gateway). I saw that many people here in the community use models from MOES, Zemismart or Sonoff.
This way, you can keep the sensors connected to the Tuya hub to change the settings whenever you want, and bring it to SmartThings via Matter to use the occupancy sensor in automations.
But of course, this is just a suggestion, since I don’t know how (or IF) the sensor works when exposed to SmartThings via Matter.
I note that pre order begins in less than 5 days. Although no indication is given on likely fulfillment date. However it’s suggesting they are close to launch?
1 Like
Or it’s suggesting that they need money and are hoping to start collecting…