I previously purchased a monoprice door sensor:
It stopped working after many years of reliable use. I took it out and its CR2 battery measures less than 1V (from 3V new), so I figured it must have run out of battery.
But even with a replacement battery, I can’t get it to work again.
I can’t find its manual. I believe it is the same as aeotec recessed door sensor (Recessed door sensor for Z-Wave • Aeotec, which is either Aeotec recressed Door Sensor user guide : Aeotec Help Desk or Recessed Door Sensor 7 user guide : Aeotec Help Desk). However, its manual mentions an LED which mine does not have.
I deleted the sensor from my hub. I tried holding the button 20s. I also tried pressing the button 3 times. But I just cannot get it to added/discovered to my hub again. Do you have the same sensor that can help me with the instruction?