... . senser sensitivity:10cm 3.Alarm methods :light/voice/vibration SECURITY BODY SCANNER (GP3003B1) Feature:Ultra-high sensitivity: this equipment ... can detect tiny metal,such as razor-chip; secure hand held metal detector is easy to find ... Carton)Where to use:Airport, station, dock for security check;Custom, police, border, security, government department;Bank, hotel, KTV, club, ...