I have some cheap ass Tuya Zigbee sensors from AliExpress. In my experience they are reliable, quite small, i sill haven't changed the battery, and they are super cheap. Make sure you get the Zigbee ones, not the wifi version.
I have some cheap ass Tuya Zigbee sensors from AliExpress. In my experience they are reliable, quite small, i sill haven't changed the battery, and they are super cheap. Make sure you get the Zigbee ones, not the wifi version.