It reports open/closed status as well as battery level.

so it does a really good job staying connected, excellent battery life, and detects the sensor opening immediately.

Note to those who have poor battery life; if installed in area with weak signal unit will operate much longer each cycle trying to connect, probably leading to the sort battery life experienced.

Lacks tilt capabilities but smart thing hub often malfunctions and has to be reset plus batteries are cr123 and less expensive than smart thing batteries

We've had them a few months, and the batteries seem to last and they haven't broken.

About a year in, still have good battery power and work flawlessly.

Best value for money, easy to pair with SmartThings, great battery life