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 air 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: IEC62053-21 Display:6-digit Color: White Voltage: 220V Current: 10(40A) Frequency: 50Hz Impulse 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 meter required experienced electrician or professional, and determined to read the manual. 2. energy meter should be installed in the indoor ventilated and dry place, adopt 35mmDIN standard guide type installation, the bottom plate of the electricity meter should be fixed in the wall that is strong refractory, and not easy to vibrate. 3. Electricity meters should be installed in protective cabinets in places where there are filth and potential damages. 4. Install according to the wiring diagram ,it is best to use a multi-strand copper wire to avoid the failure of the electrical energy meter working or burning down. 5. When the electricity meter is correctly connected to the power grid, the power indicator of the meter is light. 6. Electric energy meter should take the lightning protection measures when it is used in the area with more lightning, so as to avoid damaging the electric energy meter by lightning. 7. The load capacity of the energy meter is in the range of 0.05Ib ~ Imax (direct access) or 0.02Ib ~ Imax (through the access type of the transformer),More than the transformer ratio,is the actual power consumption 8. Data display: the meter display 9. Power indication: the green light indicates that the power meter has normal working power 10. Pulse indication: when a red light indicates that the power pulse is detected 11. When there is a sampling signal, the pulse light is about 80ms Package Included: 1 x Energy Meter Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.