Product Details 1.frequencies selectable for long distance and stacking installation 2.Double-precision digital display signal strength 3.Interruption time adjustable, user can adjust it according to environment and scenes 4.Intelligent heating function, effectively eliminate ice and frost, adapt to harsh environment 5.Progressively infrared signal processing functions (comparable with AGC function) to ensure the item work in wind, frost, snow,  fog, moisture, direct sunlight and other bad weather etc. 6.Digital CPU control circuit to control the transmitter and receiver 7.Optional assisting equipment for alignment infrared beam, improving the efficiency 8.Wide range voltage design, power supply between DC9～30V/AC9～20V,easy for centralized power supply. 9.A variety of applications C relay outputs 10.Tamper switch, open if the cover is removed 11.Waterproof grade: IP65 12.Alignment angle horizontally ±90°，vertically ±10°