PBM-05 / 12-24V bistable relay is used to control the lighting or any other device by means of parallel-connected single-pole buttons. Pressing any of the buttons (connected to the IN input) again causes the device connected to the output terminals to switch on or off. The SET and RESET inputs allow central control of the relay group. The IN and S and R inputs can only be pulse from + (DC voltage) or L (AC voltage). The design of the relay allows to remember its current state in case of power failure. An important feature of the device is the zero power consumption.