A.Never use this tester on circuits of 60 Hz, as the tester may not register the voltage. B.Always remember that the unit is polarity sensitive and if used on DC circuits reversing the leads may result in high temperatures within the tester. C.Never connect the device to circuits where potentials are greater than 120 volts. D.Always check a known power source of the same type and voltage before using it to troubleshoot electrical equipment. « Pre…
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