Description: 1.Power: 9V 6F22 standard battery or rechargeable battery (Because of shipping constraint,we don't send product with battery,hope you don't mind) 2.Power consumption: up to 270mWWorking frequency 22KHZStandby. 3.Use:1. Safety inspection and inspection of stations, stadiums and docks;2. Security examinations in the examination room, public security, schools, and security departments;3. Bar KTV Express Internet Cafe Hotel security check;the detection distance:1. Round coin: 1~3cm;2. Ordinary wallpaper blade: 3~5cm3. Six-four type pistol: 8~12cm4. Apple 6: 5~10cm 4. the use of:1. Push the power switch and hear a click or vibrate to indicate that the power is on and the green light is on. If there is no sound or vibration, it means that the battery is not installed or the battery is not in good contact. If the battery does not stop, it means the battery can no longer be used. It should be replaced with a new one.2. After the start sound is stopped, high-sensitivity detection can be performed. The hand grip handle sweeps the detection surface around the object to be tested. When there is metal object, it will give an alarm. At the same time, the green light will turn red; stop the sweep, the alarm will be Stop, the red light turns green. 5.Low sensitivity test: If you need to eliminate objects with small volume in the metal, you can press and hold the low sensitivity switch (3). When the object is swept around, there is an alarm when there is a metal object, and the green light turns into a red light; when the probe is stopped, the alarm stops and the red light turns into a green light. Since the sensitivity is reduced by more than 5 times at this time, the metal objects measured at this time are generally relatively large. 6.Note:1. Do not forget to turn off the power after use.2. Do not remove the battery for a long time to avoid battery leakage, which will cause serious damage to the detector. When the battery is low, please replace the battery or use it after charging to avoid false alarm.3. The alarm will not occur when the probe is fixed against the metal object, but it will only sound or vibrate when the metal object is swept.4. When charging, turn off the power switch (8).5. Charger voltage: DC 9V 10V 12V.6. Use a rechargeable battery when charging. Do not charge the disposable battery. Package Includes: 1 x Metal Detector