Digital controlled electrical circuit 
Easy optical alignment: viewfinder, voltage meter output and the vertical and horizontal alignment screws 
High grade aspherical lens is designed to create more precise infrared beams 
Twin beams offer stable operation 
Adjustable beam interruption time--long interruption time catches an intruder but allows a small animal to pass through 
A.G.C Circuit is designed to eliminate the false alarm caused by heavy rain, fog, frost or snow 
High grade plastic and metal material for harsh environment 
Interruption time: 50ms ~ 700ms 
Alarm output: 1c, 30VDC 0.5A , retention time: 2 sn. (± 1) 
Tamper output: 1b, 30VDC 0.1A, when cover is opened 
Alignment angle: ± 90° (horizontal), ± 5° (vertical)