This DIY metal kit provides an engaging way to learn about electronics and circuit board assembly. It is not only a fun and interactive tool, but also a practical device for various metal detecting needs, providing a hands-on learning experience for electronics enthusiasts, hobbyists, and educators who want to delve into the world of circuitry and metal detection. 

Features:
【DIY Welding Exercise】: Metal DIY kit, you need to weld and assemble it by yourself, providing an engaging way to learn about electronics and circuit board assembly. It can not only exercise hands-on ability, but also improve electronic production skills, suitable for electronic enthusiasts and students.

【Dual System】: When the is close to the metal, the and will at the same , providing both visual and auditory prompts for more accurate and convenient detection.

【Adjustable Threshold】: By rotating the potentiometer, the threshold can be adjusted according to your needs to make the device more sensitive and meet different detection needs.

【Portable Design】: The metal is compact, lightweight, and easy to carry, suitable for use in various environments, such as games and entertainment, safety checks, and so on.

【Learn Knowledge & Cultivate Thinking】: By assembling and using the metal by yourself, you can cultivate interest in electronic and physical knowledge and stimulate innovative thinking. Perfect for beginners looking to explore the fundamentals of electronic and circuit design.

Specifications:
Name: Metal DIY Kit
Material: printed circuit board
: 2 * CR2032 button (not included)
Working current: 23mA (under normal condition)
Static working current: 3.7mA (without )
Working voltage: 3-5V
Maximum detection ranges: 30-50mm
flashing : support
Adjust the threshold: Support
sound : Support
switch: Support
indicator: Support
Item size: 60 * 185mm / 2.36 * 7.28in
Item weight: 52g / 1.83ounce
Package size: 150 * 60 * 30mm / 5.91 * 2.36 * 1.18in
Package weight: 53g / 1.87ounce

Packing List:
2 * 100Ω Resistor
2 * 2K Resistor
3 * 10K Resistor
1 * 200K Resistor
3 * Capacitor
4 * S8050 Audion
2 * S9012 Audion
1 * 100Ω Potentiometer
2 * Ceramic Capacitor
1 * Self-locking Switch
2 * Electrolytic Capacitor
5 * Diode
1 *
2 * Holder
1 * Printed Circuit Board
1 * Guideline