Megger VF1 AC Voltage Detector. Online special at just £13.50. It can identify live conductors, finding a break in a wire, verifying a blown fuse while in circuit, and detecting the presence of AC voltage within socket outlets, switches, circuit breakers, fuses, cables, luminaires - you name it! Voltage is indicated by a bright red LED situated with in the white nylon tip. Includes a bright-white LED flashlight for use in poor light. Excellent value!