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 Descriptions: The meter is full compliance with national standards 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. Specifications: Standard: IEC62053-21 Display:6-digit Color: White Voltage: 220V Current: 10(40A) 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 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.  Package List