DC 3V–5V Metal Detector DIY Kit 60mm Non-contact Sensor Electronic Practice Kit

3V-5V DC 60mm Metal Detector Kit Non-contact Sensor DIY Kit Electronic Kit

DIY Solder Practice Kit Metal Detector Soldering Project Board Learning Teaching

DC 5V CW Morse Code Decoder Circuit Board Welding Practice DIY Electronic Kit

4 Bits LED Digital Electronic Clock Production Suite DIY Kit DC 3.7V-5.5V Module

DC 5V DIY Electronic Swing Kit Electromagnetic Swing Induction Teaching Welding

MQ-2 Flammable Gas / Smoke Sensor Module MQ2 Detector (DO + AO)

DIY Electronic Kits Wireless Stereo AM/FM Radio Receiver Module 87MHz-108MHz