Product size: 88*70*58mm (height*width*thickness)
Detection distance: about 0-8m, the best within 4m
Detection angle: 110° left and right, 60° up and down
Power supply mode: external 5V DC power supply / built-in 3 AAA batteries
Operating humidity: less than 80%
Alarm volume: 120dB
Product use: homes, shopping malls, convenience stores, supermarkets, office buildings, etc.