Check the listing for details. Handheld Metal Detector Security Scanner Super Body Search. Condition: New. Listed at 19.79 USD. Usage method: 1. Push the power switch (8) and hear a "click" or shake, indicating that the power has been connected 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 in poor contact. If the alarm continues, it means that the battery cannot be used again, and the battery should be replaced. 2. High sensitivity detection can be carried out after the startup and sound stop. Hold the handle to scan the detection surface around the tested object. When there are metal objects, an alarm will be given. At the same time, the green light will change to red light; Stop scanning, the alarm will stop and the red light will change to green light. 3. Low sensitivity test: If it is necessary to remove small objects in metal objects, press and hold the low sensitivity switch (3). When scanning around the tested object, an alarm will be given when there are metal objects. At the same time, the green light will change to red light; Stop scanning, the alarm will stop and the red light will change to green light. Because the sensitivity is reduced by more than 5 times, the detected metal objects are generally large.