Electrical Mains Phase Tester Screwdriver Test For Voltage Live Circuit, QUALITY Has a built in Neon light to indicate power. Following information supplied by manufacturer : The voltage indicator is suitable for testing AC voltages from 100 up to 500 V against earth. The metal part on top of the indicator must be touched to operate it and the earthing position of the user largely determines whether it lights up or not. Note : Failure to light up therefore does not indicate with certainty that no voltage is present ! This is a brand new high quality Tester Screwdriver please choose from the drop down menu your required quantity |