3504Polarity Tester / Stroboscope
Descriptions:
Dual color LED, color changes base on the polarity connection. If it is positive to the red wire, green LED lights up, if it is negative to the red wire, red LED lights up.
Dual color LED, color changes base on the polarity connection. If it is positive to the red wire, green LED lights up, if it is negative to the red wire, red LED lights up.
