Product advantages:VT15 series test pen has measured AC and DC voltage (including three-phase AC voltage) measurement,Applicable to: IP54 waterproof design, in line with CAT III 1000V, electronics, electricity, machinery and other industries. Is a good helper for home maintenance battery test.Product technical characteristics:Voltage Indication (V): 6V .................. 4V ± 2V 12V .................. 8V ± 2V 24V .................. 18V ± 2V 50V .................. 38V ± 4V 120V ............... 92V ± 6V 230V ............... 174V ± 10V 400V ............... 320V ± 15VPolarity test: positive and negativeProduct General Features:IP54: YesProduct Size: 19x4x6.3CMWeight: 65g (with test leads)Standard configuration: bare table (with a pen), blister, paper card, optional alligator clip.Package Description:1 * voltage test pen