2, with charging function, charging time is 4-6 hours (charger optional) 3. When the voltage is not enough, the indicator light does not light or always alarms. 4, there are dual prompts for sound and light and vibration alarm 5. The first automatic reset function switch is used to switch the sensitivity, so that it can detect large items (excluding small items) and detect small metal items. 6, with adjustable sensitivity 7, this is one of the most popular models, can be applied to any field Products Demo Photo:
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