First, you have to note which version you are referring to.
Mine are all v2 (2016) and have been retired from active use because of poor battery life with CR2450s. I was getting 9-14 months battery life in a location where the door was opened about once a month.
The newer v3 ones (now branded Aeotec) still use the same batteries.
And I don't generally need vibration and tilt in a contact sensor, so why pay for that extra cost?
