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3pcs 555 Trigger Circuit Student Soldering Practice Board Electronic Production DIY Kit

5pcs Electronic DIY LED Dimming Lights Series and Parallel Circuit Technology Small Production Kit

3pcs Electronic DIY LED Dimming Lights Series and Parallel Circuit Technology Small Production Kit

5pcs Electronic DIY Kit MQ-3 Sensor Alcohol Detector Tester Alarm System Components Suite

3pcs Electronic DIY Kit MQ-3 Sensor Alcohol Detector Tester Alarm System Components Suite

3pcs Mini Crystal Film Square Blue LED Digital Thermometer Signal Light AC 50-380V 220V Temperature Meter Indicator Range -20-200℃ with 1m Sensor