Labgear PI00494 - Voltage Detector Electrical Tester Pen 2-in-1 with LED Torch and Audible Tone Non Contact Power Cable Testing\n\n--AC Voltage Detection: The Labgear voltage detector pen is a quick and simple method for non-contact detection of the presence of ac voltages from 90v to 600v with improved balance sensitivity for more accurate detection\n\n--Multi Purpose: Ideal for use in identifying the presence of ac voltage at socket outlets, switches, circuit breakers, fuses, luminaries, wires and cables. it can identify breaks in conductors by tracing along the cable from the source to the point where the indicator no longer illuminates; and also identify a blown fuse while in circuit\n\nDESIGNED FOR PROFESSIONALS\nWith an easy to follow user guide for clear resultsLABGEAR PI00494\nA must have for every toolbox, the Labgear Voltage Detector glows red and emits an audible warning when voltage is present. It also has a handy built in LED torch function for use in low light.