Product Description

It can easily detect pin-size metal articles (3.5cm to the probe)* It yellow light will be on an independent battery low voltage system and the yellow light is on. * sound & light and vibration alarm* With shielded damp-proof sensitivity adjusting hole* Working power supply: 6F*2ND 9 V battery (alkaline batteryrechargeable battery), rechargable battery should not be taken out and rechared (the price not included the charger and battery).