2 beams Intelligent Integrated Photoelectric Beam Detector. 
Detecting way : 2 infrared beams are interrupted at the same time
■ Self-contained mounting bracket for quick and easy installation
■ Integrated tamper switch, turns on when cover is moved.
■ Frequencies selectable for long distance and stacking installations
■ Wide voltage power input: DC9-30V/AC9-20V
■ Alignment angle horizontally (±180°), vertically (±90°)
■ Digital filtering, high environment adaptability to eliminate false alarms
■ NO/NC relay outputs
■ The design of the brim extending inward makes the anti-sunlight interference ability stronger