Condition: 100% Brand New Item Type: Microwave Sensor Switch Material: ABS Diameter: Approx. 9.5cm / 3.7in Height: Approx. 4.2cm / 1.7in Operating Voltage: 12-24V DC Output Type: Relay node (switch) signal Installation: Indoor, ceiling installation HF System: 5.8Hz+/-75MHz CW Radar Power Consumption: Please allow 1-3cm error due to manual measurement. Thanks foryour understanding. 1It uses microwave sensors, which has better performance and safer than infrared sensors. 2Use microwave radar as control signal source to detect human movement. When someone enters the detection area, the indicator lamp will immediate light. 3The detection range is 360, which is easy to install and provides high detection probability. 4Perfect for closets, basements, laundry, garages, bathrooms, aisles and stairs. 5High sensitivity, long induction distance, strong reliability, large induction angle, wide range of power supply voltage.