Reply To: Why my video doorbell keep alarming when power on Best DIY Home Security Systems from iSmartSafe › Forums › Getting iSmartSafe › Why my video doorbell keep alarming when power on › Reply To: Why my video doorbell keep alarming when power on January 26, 2019 at 9:12 pm #5675 ismartsafeKeymaster It has a sensor on the back of doorbell to detect whether the doorbell is disassemble. So you need to put the video doorbell into the cover or case, which it will disable the temper alarm.