DDSF732-L3 SINGLE-PHASE ELECTRONIC MULTI-RATE METER The type DDSF732-L3 meter is designed for measuring energy in household and commercial single-phase network services. It's made of static single-phase power meter modules and rates modules, LCD display, high reliability and also infrared communication functions. Supplying advanced and reliable measurement tools for the single-phase time-of-use measurement. The meter's performance conform to GB/T15284-1994 multi-rate (TDM) Meter, GB/T 17215-1998 1.0 & 2.0 class static AC energy meter and DL/T645-1997 multi-functional table communications statute. MAIN FEATURE: ?Separately measuring energy consumption with different time zone, and register the energy of current month and last month. ?Maximum 8 tariff period, different period measuring separately by the peak and valley power. ?Adopt LCD display total power and valley power, so reading meter will be facility. ?Using handhold computer display the meter data. (No. of meter, the total power, peak power, Valley power, rates, etc.). ?The power loss of spare battery is small and life time is long and has high reliability. ?Input the No. of meter (can be shorten) infrared setting and reading the time, period and power consumption of meter. ?Clock hardware and software compensation function. ?RS485 extended port. ?Impulse output. ?Average using lifetime can reach more than 10 years.