The Megger VF6 EX Voltage Detector is intended to be used to check for the presence of AC voltage, indicated by a bright red LED situated within the white nylon tip, an audible sounder plus vibration alert.The detector has both low voltage (12 - 1000 V) and medium voltage (100 - 1000 V) ranges. The VF6 EX has the added advantage of a bright-white LED torch for use in poor light.