Generic Metal Detector Non-Contact Induction Sensor Module with Buzzer

The module is designed to operate strictly at 5V DC. Applying a voltage outside this specification may damage the onboard components. Ensure your power supply is regulated to 5V for stable operation.

Sensitivity is adjusted using the onboard blue multi-turn potentiometer. Turn it clockwise to increase sensitivity (detect metals from a slightly greater distance) or counter-clockwise to decrease it. The module can detect both ferrous (iron, steel) and non-ferrous (aluminum, copper) metals.

The primary output is the activation of the integrated buzzer. For a digital signal, you can solder a wire to the buzzer's connection point or use a transistor to isolate the signal. The module itself does not have a dedicated digital output pin; its output drives the buzzer directly.

The nominal detection range is up to 1 cm (10 mm) under ideal conditions. The actual distance depends on the metal's size, composition, and the sensitivity setting. Larger, more conductive metals may be detected from slightly farther away.

Yes, the module has solder pads labeled V+ and V- for the power connections. You must solder wires directly to these pads to connect your 5V power source, with V+ being the positive terminal and V- the ground.