In unmanned elevators, sudden power failures cannot be detected from the remote operating room, which can be dangerous for elevator users.This is a simple circuit that will alert the remote lift/elevator control room if a power failure occurs.The circuit is powered by a 6V dc battery. This circuit will assist you in protecting your valuable documents and jewelry from intruders or theft. All you need to do is position this circuit in front of the locker or beneath the mat so that when an unfamiliar person walks over the switch, the circuit activates and an alarm sounds. The circuit's key advantage is that they may be suggested in two places at the same time, as two distinct switches make two different noises.
