The Megger VF1 and VF2 Voltage detectors are, compact pen-style instruments to identify the presence of live AC voltages from 100 V to 600 V at 50 or 60 Hz. Voltage is capacitively detected, signalled on the VF1 by the illumination of a bright red LED situated within the white nylon tip. The VF2 has the additional feature of an audible warning device actuated simultaneously to the red LED.Both VF1 and VF2 incorporate a flashlight torch. Extended battery life is achieved by the use of a bright-white LED.