- Highly sensitive, it can easily detect pin-sized metal articles.
- Its sensitivity can be adjusted according to the on-site requirements.
- Indication of low battery voltage (LED light is always on).
- There are two kinds of alarms, including sound & light and vibration
- Working power supply: 6F22ND 9 V battery (alkaline battery, rechargeable battery), rechargeable battery should be taken out and recharge. the price not included with charger