Metal Detector - DIY Soldering Kit for Beginners - STEM Education (OT3630)

How to Solder a Working Simple Metal Detector by Yourself! Searching for treasure on a tropical beach isn't the only application for metal detectors. In the food industry, metal detectors are used to find foreign metals and machine parts in food. In security, they are used to detect weapons. In manufacturing equipment, they are used for position detection and parts counting. You can even use them for gaming entertainment or a proximity switch on a toy train set. Features: 3 -5V DC Working: 40mA Standby: 5mA Detecting distance: less than 60mm Alarm mode: light and sound 86*61mm The buzzer starts to ring and the red light indicator lights up when the metal is close to the metal detector.