Top positive review
Reviewed in Australia on 19 July 2019
I have been looking at these for a while, and took the plunge on Prime Day for a good price. this little beauty is awesome.
Small with a magnetic base to fit on a small bracket included, and runs on 2 x AAA batteries. the instructions say they will last for 2 years, so I will have to wait to find out :) Piece of cake to setup and seems to work reliably 100% off the time so far. I think I need more of these now... I will have to wait till they are on special again.
Other reviewers talk about a temperature sensor and lux sensor in the unit, it is not documented anywhere but yes they exist as long as you are using Apple Home. I am using Alexa and these sensors cannot be accessed as yet