Detection distance:
38 model handgun 15cm-20cm
Pen, knife 10cm-15cm
Shave blade 5cm-10cm
25¢ 45mm
Pin 15mm
The sensitivity is decided by the size, shape and the component of metal
Technical Specifications:
Battery: 9V battery or rechargeable battery
Power: 270mW
Operating frequency: 22 KHz
Operating current: <50mA
Operating voltage range: 7~9V
Temperature range: -5℃~55℃
Net weight: 280g
Size: 39.5(L)X6.8(W)X3.2(H)