The MD-3003B1 Super Scanner is a high-performance hand held metal detector designed to safeguard security-sensitive areas such as schools, courtrooms, correctional facilities, sports events, businesses, nightclubs, bars, and other public areas and events. It is ideal for detecting hidden metal objects for security purposes in airports, borders, and crowd control scenarios. MD-3003B1 Security metal detector Features: Simple and convenient operation. Can easily detect metal articles (3.5cm to the probe). Large detecting area, enabling efficient detection by moving from top to bottom. Independent low battery voltage system with yellow light indicator. Double indication modes: sound & light and vibration for precise metal position detection. Shielded damp-proof sensitivity adjusting hole for durability and cost-effectiveness. Technical Parameters: Easy operation with a leather case for convenient carrying. Panel-type detector with a large detecting area to prevent missed detections. Rechargeable function available with an optional direct charger or base charger. Low battery LED indication or continuous alarm. Double alarming modes: Buzzer & LED or vibration. Auto reset function switch for detecting small objects in special occasions. Sensitivity adjustable by the operator based on security level.