Overview: Detects AC voltage without metallic contact Red LED voltage indicator, convenient for operate in darkness Fits in a shirt pocket for convenience Entire outer surface are non-conductive for safety, helps avoid high voltage shock Quickly locates the hot, neutral & ground terminals in any receptacle Voltage Sensitivity: 90~1000V AC Powered by 2 1.5V AAA batteries (not included) Specifications: Dimensions: 5.51 in x 0.75 in x 0.63 in Weight: 1.41