General description This handheld metal detector is designed for high sensitivity and portability, making it ideal for important occasions such as parks, schools, museums, airports, and subways. It features a large detection area and fast detection speed, ensuring effective security checks for prohibited goods, electronic products, and metals. Technical specifications Temperature detection range: -15 to 45 ℃ Frequency: 25 KHz Power consumption: 270 mW max Working voltage: DC 7 to 12 V Standby current: < 5 mA Reset time: 0.5 seconds Detection distance: Pin: 0 – 1.18 cm, Iron Nails: 0 – 6.36 cm, Handgun: 0 – 9.94 cm, Dagger: 0 – 12.9 cm, Steel Ball Diameter: 0 – 6 cm Power supply Powered by a 9V battery (included) Three battery power indicators: green (normal), yellow (low power), red (replace or charge battery) Usage This metal detector is very easy to use and is ideal for detecting rare illegal goods. It offers two security mode indications: an alarm signal or a vibration signal.