Airport Security Portable Scanner / Metal Detector with USB charger / Highly Sensitive
This Hand-Held Metal Detector is fully digital. Electronic functions include a magnetic field transmitter-receiver based on Digital Signal Processing (DSP) technology. This design, combined with a special printed antenna, ensures consistent performance, very high reliability and calibration-free operations. The alarm signaling modes include: optical alarm proportional to the intensity of the detection signal; acoustic alarm with a tone which is proportional to the size of the object detected; vibration alarm signal.
Easy and simple to operate
Detection distance keep steady when 9V battery is used up to 7V.
Save power. Alkaline battery can work over 24 hours.