I am interested in putting a smartthings multipurpose sensor (or something similar) on my garage door and possibly in the fridge as well. It can get very cold here (Worst case outside temp is probably around -40, not sure what the garage temperature would be) so I have two concerns
Is there a minimum operating temperature for the sensors?
Will battery life be significantly impacted? (My guess is yes)
I have the Aeon Multisense outside. Last weekend it got down to -5F. I got a low battery alert saying 1% left. This was on Alkaline batteries. At the time of this writing it’s now 24.5F and it’s showing 30% left. I didn’t change the batteries.
This on my sensor:
Within each sensor is an incremental temperature sensor capable of accurately measuring between -10~50°C (14 to 122°F). I can’t find “operating” temp.