It has separate transmitters and receivers. The transmitter emits an invisible infrared beam to the receiver. If the beam is broken, the receiver signals an alarm. The DS455Q uses four pulsed infrared ...

An IR sensor is located near the TV and wired to the receiver, which can be many feet away in the equipment rack. The receiver has an amplifier and an "IR blaster" that showers IR signals to all ...

The outdoor motion sensor’s detection range, sensibility and alarm output can be set independently on the ... On each side, the BX Shield motion sensor features two passive infrared beams; one ...