Key benefits Learn electronics while getting a useful tool: this module is a hands‑on kit that teaches basic soldering and circuit assembly while delivering a working metal detector. Immediate, easy-to-read feedback: detects metal and triggers both a buzzer and a red LED so you always know when metal is present. Low-voltage, easy to power and integrate: runs on DC 3–5 V, making it compatible with common low-voltage power sources and simple to add into hobby projects or control systems. Accurate close-range detection: designed for short-range sensing (detection distance less than 60 mm) to locate nearby metal parts reliably. What it does (functions and performance) Function: simple metal detector module that switches a sound-and-light alarm when metal is detected. The buzzer sounds and the red LED lights up on detection. Performance: detects metal objects within a range of under 60 mm; operates at DC 3–5 V. Assembly: supplied as an electronic components kit that requires assembly and soldering. The circuit layout is straightforward and suitable for beginners. Compatibility and integration Power: compatible with any DC 3–5 V supply. Integration: module-level design can be incorporated into small projects, prototypes, or control circuits (requires basic wiring and soldering). Use with microcontrollers or relays: can be used as a trigger input for larger systems where a simple metal-detection signal is required. Practical use scenarios Hobby projects: build a handheld probe to find small metal screws, nails or pins in model-making, woodworking, or electronics work. Security and access control: integrate into a simple security or checkpoint circuit to detect metal objects passing a threshold or to serve as an auxiliary sensor in security checks. System automation and sensing: use as a proximity switch in devices such as simple car-related detection setups or elevator control prototypes where short-range metal sensing is needed. What you get and who it’s for A beginner-friendly electronic components kit for a simple metal detector module with sound-and-light alarm. Recommended for hobbyists, students learning soldering and electronics, and engineers prototyping short-range metal-detection features. Important specifications (exact) Working voltage: DC 3–5 V Detection distance: less than 60 mm Alarm: buzzer and red LED indicator Assembly: kit requires soldering and manual assembly; circuit suitable for beginners Notes This is a module-level electronic kit; you will need basic soldering tools and a compatible DC 3–5 V power source.