The Laserliner ActiveFinder is a contactless handy voltage tester for working safely on electrical lines It locates electrical voltages in cables sockets bulb sockets and fuses In addition it determines the polarity of LN conductors eg on sockets or terminals and finds breaks in wires and cables The ActiveFinder has extremely high sensitivity for tracing lines at great depths Its zoom function offers tracing of live cables at depths up to 4cm depending on the material It features an LED for signalling electrical voltages and an integrated flashlight with separate onoff button Its rugged casing is impact-resistant Supplied with 2 x AAA batteries Voltage range 24-1000 Volt Frequency range 50-60Hz Overvoltage Category CAT III – 1000 Volt non condensing