EXCELLENT PERFORMANCE - This electricity meter features high reliability, small volume, light weight, beautiful appearance, advanced technology, installation on standard 35mm DIN guide rail, etc. WIDELY USED - This energy meter is suitable for measurement of single phase 50Hz alternating current rated frequency of active electricity, used for indoor fixed installation. This single phase energy meter can measure the positive active energy in the measurement of electric energy, which is clearly displayed by the backlit LCD screen. LONG LIFE - This single phase energy meter has good anti-electromagnetic interference, low power consumption, high precision, high overload, high stability, long life and long service life. TWO LINES OF LED DISPLAY - The top row displays the temporary power consumption meter and can be cleared. The bottom row shows total power consumption and cannot be cleared. WORKING ENVIRONMENT: The ambient temperature is -25 to 55, the relative humidity is less than 95%, and the air does not contain corrosive gases and avoid dust, mold, salt fog, condensation, insects, etc. Product Dimensions: 10*6.5*3.5cm. Shipping Quantity: 1 piece.