DIY Magnet Polarity Tester Electronic Kit 3V

DIY Magnet Polarity Tester Electronic Kit 3V

banggood DIY Electronic Kits

6.79$
2.99$
Description The product will light up the LED lights according to the Hall sensor to sense the north south of the magnetThe south pole lights up in blue and the north pole lights up in redThe 3V button battery is used for power supplywhich is convenient and simpleBuilt in toggle switchmore power saving Package Included Magnet polarity testerComponent nameparameterPCB identificationquantityPCB boardPCB1LED lights3mmLEDredLEDred13mmLEDblueLEDblue1Hall sensorFour feetAH227A636J602771Toggle SwitchesStraight three pinswitch1Button Battery3VBattery1Battery base3V1Four color circlesPlug in resistance1kBrown black red goldR1R22