I did a factory reset, and when configuring again, I switched off the
light option. Now the batteries are ok. I have the feeling batteries got
drained because the sensor had become too sensitive.
I’m experiencing this problem with one of my three nest protects. After
putting new batteries, it seems that the sensors have become much more
sensitive, causing the light to go on very frequently, and stay on for a
while.I put new Duracell batteries...