Featuresnon-contact detection of AC voltage rugged, double-moulded housing LED indicator built-in flashlight with bright LED handy pen shape with pocket clip for use on 50/60Hz circuits beeper indication Specificationsstandard: CAT III 1000V voltage range: 100~600 VAC power supply: 2 x AAA (LR03C), incl. dimensions: 176mm x 26mm weight: 48g (with batteries)