Extech has full line of advanced test instruments that do the job faster, safer and easier. The EX830 model clamp meter range in AC to DC voltages up to 600, and can read to 1000 Amps of current. Backlite, which enables electricians to read measurements in dark, bright or tight locations without difficulty or safety risk. These meters are good from any application from current measurements to troubleshooting industrial motors, and adjustable speed drives (ASDs).