- DIY Metal Detector Kit: Build your own handheld metal detector with this easy-to-assemble electronic kit. It includes all necessary components to create a functional device capable of detecting metallic objects within a range of 3-5 cm. Ideal for electronics enthusiasts and beginners interested in learning about metal detection technology. - Sensitive Detection Capability: This handheld metal detector features responsive sensors that can recognize various metallic objects. Detection range varies based on metal size—larger surfaces can be detected from a distance, while smaller items require proximity. Adjust the sensitivity threshold using the built-in potentiometer for customized performance. - Dual Alarm System: When metal is detected, this device activates both auditory and visual alarms. An integrated buzzer sounds an alert while a red LED indicator blinks, providing clear confirmation of metal detection. This dual notification system is effective in both quiet and noisy environments. - Portable Design: Compact dimensions of 185 x 60 mm and a lightweight build make this metal detector easy to carry and operate. Powered by two button batteries with a voltage range of 3-5 V, it maintains low energy consumption, drawing only 23 mA during normal alarm state and 3.7 mA in standby mode. Practical Applications: - Use it while treasure hunting in parks or beaches to discover hidden coins and artifacts. - Great for hobbyists looking to explore old sites or construction areas for historical items. - Perfect for educational purposes, allowing students to learn about electronics and metal detection in a hands-on manner.