Infrared trip-wire Emits a IR pulse at 880Nm which will be seen by the Watec 0.003 CCD camera fitted to a UAV drone. Fly the drone over a patrol route taking pictures at a hight of 200m by night to detect a farm or other perimeter intrusion.

Instead of a physical wire activating the beacon, trigger the flashing beacon with a normal IR beam alarm system described at Infrared leds

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