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 MD-3003B1 metal detector metal detector 
 According to installation location: indoor and outdoor compatible 
 Operation modes: passive 
 Type: Hand-held detectors 
 MD3003B1 use 9-volt battery or rechargeable battery, battery cover open when installing the battery, the battery positive and negative attention to open the on / off switch button, the green light, then the detector can work properly. Detector sensitivity and detection range can be adjusted until the red light and a continuous alarm. Sensitivity adjuster counterclockwise until the red light disappears off the alarm sound is most appropriate at this time the detector sensitivity and detection range. Hand-held detectors are checked with the probe surface in the 10-30 mm region above the surface to scan back and forth. If metal detectors that will sound an alarm and red light. When the detector remain fixed at the top of the metal objects will be automatically reduced when the detection signal, so use the detector to be scanned back and forth, it is very important.