Retro-reflective photoelectric sensor.
Range: Up to 22 feet(7m).
Perfect for monitoring or indicating an entrance.
Will make “ding-dong” sound or siren sound when the beam is interrupted.
Speaker volume can be adjusted or turned off.
When in siren mode, sounding time is adjustable from 3 to 30 secs.
All components plug into each other. No hard wiring required.
LED indicator for power/alignment.
SPDT NO/NC relay output.
Includes the following: Sensor, Reflector, Speaker/Electronic Chime, power adapter.