Laser Receiver Sensor

The receiving half of a beam-break system. It outputs one digital state while a laser beam strikes its sensor and switches the moment the beam is interrupted, making it straightforward to build tripwires, object counters, perimeter alarms and finish-line timers. Onboard sensitivity adjustment helps it reject ambient light. Align it carefully with the transmitter — a laser beam is narrow, and even small mounting movement breaks the link. Instant digital output when the beam is interrupted; Adjustable sensitivity rejects ambient light; Works over several metres with a focused laser; Simple three-pin connection