For me, the Zigbee ones (generic ones from AliExpress) have been great inside both fridge and freezer. Bluetooth ones occasionally dropped off (and were much worse re: battery life.)
For me, the Zigbee ones (generic ones from AliExpress) have been great inside both fridge and freezer. Bluetooth ones occasionally dropped off (and were much worse re: battery life.)
What happen to the batteries when inside the freezer ? Sensors seems to be fine at -20°C, but is it the case for standard AAA or CRC32 batteries ?