Features: Voltage range 80-300V 200-450V Current maximum 100A; Comes with transformer coil, without the buyer-owned; grid voltage direct power supply, no external power supply, accurate measurement! HD LCD color LCD monitor (with HD backlight), side / up / long distance / no dead ends! No matter the effect of watching the night and day are very good!
Note: If you want to measure ABC / three-phase voltage and current at the same time, you must buy 3 instruments, 3-phase 4-wire check 80-300V / 3-phase 3-wire check 200-450V

1: Transformer hole diameter of 15.5mm, to meet the national standard 21-25 square (mm) standard copper through.