... single phase two wire active electronic watt-hour meter, cyclometer display.The meter is used to measure 50Hz or 60Hz active ... features of good reliability, light weight, specious appearance, etc.The meter is widely used in office buildings, shopping malls, residences, ... -21,IEC62052-11.♦Directly connect operation or through CT or PT & CT.♦Adopts high reliable and long-life electric components, ...