Plug type installation convenience simple, flame retardant fire prevention materials, elegant shape. Dual infrared, using 8-bit low power consumption microprocessor, automatic temperature compensation technology, strong ability to resist false positives with SMT technology, strong resistance to electromagnetic interference and radio-frequency interference ability and detection Angle of 110 degrees, NC signal output, DC 12 v. Wide Angle detection, detection Angle of 110 degrees, detection range of 12 meters.