I have 5 H&T sensors. I changed the battery to one of them and it stopped reporting data automatically (it worked before that).
If I press the button, the sensor wakes up and reports data normally one time. Then it starts showing constant light for a long while, then goes to sleep, and never reports again until I press the button again.
How do I make the sensor work normally again?
Firmware update or downgrade doesn't help, factory reset does nothing (I don't think holding the button for 10 seconds even does a factory reset, but I'm not sure.)
On a side note, the "user manual" of these H&T sensors is A FREAKING JOKE. I get all sorts of random undocumented blinking behaviours and I'm supposed to somehow figure out what they all mean? Extremely frustrating and time-consuming trying to get these to work.