The type DDS2-L1 single-phase meter is designed for measuring energy in household and commercial single-phase network services. It adopts the integrate circuit ADE7755 professionally used for measuring energy. The accuracy basically can't be affected by temperature,voltage and high harmonics.After a piece of meter sold out from the factory,it did not need any adjustment thus significantly delay the inspection cycle.The meter's performance conform to IEC1036,IEC62052-11,IEC62053-21 and GB/T17215-2002 Standard. It also has infrared and 485 communication functions and the communication stipulation support Multi Function Power Meter Communication Stipulation