The Fluke T6-1000 Voltage & Current Electrical Tester, with FieldSense technology and dual display, is designed for safe and fast measuring voltage up to 1000 volts through the open fork, without test leads. It is a powerful troubleshooting tool for electrical contractors and field service engineers. With a 17.8 mm jaw opening, the fork is wide enough to measure 4/0 wires up to 200A. The device offers a simultaneous voltage and current display, frequency measurement 45 Hz to 66 Hz and Hold button.The T6-1000 voltage & current tester includes attached test leads with removable 4 mm probe caps, and AA batteries (2). It comes with a Quick Reference Guide. The unit measures 2" x 2.4" x 10.2" and weighs 0.78 lbs.