2 Sets Optex Photoelectric Detector Motion Sensor Wonderex AX 500T

2 sets OPTEX WONDEREX AX-500T Photoelectric Motion Sensor Receiver . OPTEX WONDEREX Photoelectric Motion Sensor Receiver Part # AX-500T Range : 500 Ft (150m)Power input : 8-22 VAC, 10-30 VDC / 50 m Alarm output : N.C. 28 VDC, 0.2a max. Sold As Is, not tested.