KNIPEX 00 11 17 Universal Control Cabinet Key-Pen Style and Tester Contactless detection of alternating current with optical indication; range of voltage 50- 600 v; frequency range 50- 60 Hz within / off button Four different key profiles can be utilized by swiveling the key holder For control cabinets and shut-off systems in the supply of gas, water and electricity With bit insert: cross recess ph 2 Universal 1/4 bit adapter for standard bits (permanent magnet for retaining)additional bit adapter for 1/4 bits inside one key profile