Directly to a precise measurement of racing to the active power energy metering, LCD display shows active power consumption, has good reliability, small volume, light weight, beautiful appearance, advanced technology, characteristics of standard installation guide rail type. Features - Color: As shown. - Material: Plastic. - Size: About 7.85 x 3.65 x 4.3 cm. - Reference voltage: 230V. - Frequency: 50/60Hz. - The electric energy meter should be installed in a dry and ventilated place in the room. The bottom plate of the installed electric energy meter should be fixed on the wall which is firm, refractory and not easy to vibrate. - In places where there is contamination and possible damage to the institution, the electricity meter should be installed in the protective cabinet. - When installing wiring, wiring shall be conducted according to the wiring diagram on the button cover of the electricity meter or the corresponding wiring diagram in this manual. It is best to adapt to the introduction of multiple copper wires to avoid abnormal operation or burning of the electricity meter due to poor contact. - When the meter is correctly connected to the power grid, the power indicator light of the meter should always be on. - When the watt-hour meter is used in the area with more , protection measures should be taken to avoid damage to the watt-hour meter caused by . - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand