Twin-beam infrared photobeam sensor
This range of four Garrison beams can operate 25 meters outdoors.
Features include:
Indoor/outdoor use (wall mount or pole mount)
Protection range 25m (LK-40HD), 60m (LK-60HD), 80m (LK-80HD), 150m (LK-150HD)
Powerful twin beams of pulsed infra-red energy to reduce false alarms
Immunity to infrared interference from sunlight
Built-in viewfinders
Blocking time adjustment provided for specific target movement rate detection (50-500 msec)
Tamper protected
Includes mounting brackets