Descriptions: The meter is full compliance with national standards GB/T17215.321-2008 and IEC62053 international standard of grade 1 level of the relevant technical requirements of the single phase KWh meter,can measure the active power energy , by 6 digital display total electricity consumption,It has the advantages of convenient meter reading, high reliability, small volume, light weight, beautiful appearance, advanced technology, and installation of 35mmDIN standard guide rail.It has good anti-electromagnetic interference, low power consumption, high precision, high overload, high stability, anti - theft and long life. Features: It has the advantages of convenient meter reading, high reliability, small volume, light weight, beautiful appearance, advanced technology. Installation of 35mm DIN standard guide rail. This meter is suitable for the measure the single-phase AC efficient electrical energy of rated frequency 50Hz,used for fixed installation indoors. Apply to the environment temperature is less than - 25 ℃ ~ + 55 ℃, relative humidity is not more than 95%, and in the without corrosive gases and avoid dust, mold, salt fog, condensation, insects, etc. It has good anti-electromagnetic interference, low power consumption, high precision, high overload, high stability, anti - theft and long life. Specifications: Standard: IEC62053-21Display:6-digitColor: WhiteVoltage: 220VCurrent: 10(40A)Frequency: 50HzImpulse constant: 1600imp/kWh Operating Humidity: ≤95% Operating Temperature: -25 ℃ ~ + 55 ℃ Size:10 x 7.5 x 6.5cm/3.93 x 2.95 x 2.55inch Weight: 276g Installation and use: 1. Installation of energy mete