High- retardant ABS case, with good impact , heat/ cold , insulativity and durability. Adopts 35mm standard guide rail installation, size and light weight installation easier. With 6+2 digits backlight , the meter accurately counts and clearly displays the consumption. 3-phase 4-wire meter with high accuracy is designed for the measurement of rated frequency 50 or 60Hz single-phase . Pure copper wiring terminal with conductivity and can current during long-time performance., Weight: 0.84216584084 Pounds, Manufacturer: CTRLZS