Salisbury By Honeywell Voltage Detector allow testing to be continuous and automatic. These simple detectors make it easy to confirm a line or component is energized or de-energized. An intermittent flash and beep confirms the detector is functioning properly. Salisbury By Honeywell Voltage Detector are used to verify live or de-energized conductors. These testers may be used with insulating rubber gloves or hot sticks using the splined universal end fitting. Testers indicate voltage with an extra bright LED light and a distinctive audible signal. It is recommended that the tester be moved closer to the conductor until a warning is indicated, or it touches the conductor, apparatus, or test point. Each tester includes three C batteries.