Use a pen holder , and the part of the pen is wrappedwith a rubber sleeve to accidental and short circuit The pen tip can be removed , if thewire is in use , it is easy to connect Just connect to the two poles of the capacitor With LED and beepsound in The circuit design is reasonable , regardless of the positive and poles , the positive and polescanbe connectedfreely, Manufacturer: YUGSHNKFC
Use a pen holder , and the part of the pen is wrappedwith a rubber sleeve to accidental and short circuit The pen tip can be removed , if thewire is in use , it is easy to connect Just connect to the two poles of the capacitor With LED and beepsound in The circuit design is reasonable , regardless of the positive and poles , the positive and polescanbe connectedfreely, Manufacturer: YUGSHNKFC
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