SG-397 detecting range: diameter: 18m high:4m Detection Dual infrared microwave detect Detection distance Diameter 18m Installation/height Walling (indoor &outdoor)/1.8-3m Detection Doppler shift Detecting rate 0.2-7m/sec Frequency 10.525GHZ\10.587GHZ\9.9GHZ Anti-tamper switch NC 50mA/24VDC Alarm output NC 500mA/30VDC Working current / power 7.5-16VDC/static25mAalarm 20mA Working temperature/humidity -25°C～65°C/more than90% Anti-EMI >30V/m 10MHZ～1000 MHZ Anti-white light >8000LUX Dimension 172?171?60.5mm