... from single phase two wire AC electricity net. The meter adopts LSI (Large-scale Integration) and SMTmanufacturing technique,the ... reliability, small volume, light weight, specious appearance, etc..The meter is widely used in office buildings, shopping malls, residences, airports ... or PT & CT.♦Adopts high reliable and long-life electric components,hioverload, do not need to calibrate for long-term ...