Pocket sized, pen style voltage detector that tests for energized circuits and defective grounds Non contact detector senses the steady state electrostatic field produced by ac voltage through insulation Tip glows red, and the detector beeps (optional), if voltage is present Detects 90 to 1,000vac Category iv 1000v rating, and meets iec 61010 1:2001, ul 61010 1 (2nd ed.), can/csa c22.2 no. 61010 1 04, and isa 82.02.01 pollution degree 2