Product review (5 stars): Works Great!
I use one of these to monitor the humidity in my crawlspace under my house and it has been working fine for months now. It wakes up and sends the temp and humidity data to your z-wave controller every 30 minutes. You can adjust this to whatever you prefer but remember that affects the battery life. It has been used for almost 4 months now and the battery meter still shows 70% so I should get around a year before needing a new battery. It does send battery status to your controller so you know when it needs changed. I use a Vera Lite as my z-wave controller and have had no issues with this item so far. I just recently ordered another one to put in the attic.