DDS26-type single-phase electronic energy meter for measuring rated frequency 50/60Hz single-phase AC active energy, all of its properties are in line with GB / T 17215-2002 standard, a single-phase energy meter all the technical requirements. Function: With anti-tamper features, using two-way metering, to effectively prevent a fire one, the reverse behavior stealing electricity and so on. For the inverse power by being able to measure the normal use of electricity. At the same time have a long life, high accuracy, power consumption, small size, light weight and high overload capacity. Applicable conditions: Ambient temperature: -25 ℃ ~ 65 ℃, relative humidity of less than 100% Operating voltage range: 220V/230V/240V（-30%?+20%)