Directly to a precise measurement of racing to the energy metering, seven LCD display shows consumption, has good reliability, small volume, light weight, beautiful appearance, advanced technology, characteristics of standard installation guide rail type. Features - ColorWhite - Material: Plastic. - Size: About 7.85x3.65x6.4cm. - Reference voltage: 230V. - Frequency: 50Hz. - The meter should be installed in a dry and ventilated place in the room, with 35mmDIN standard guide rail type installation. The bottom plate of the installed meter should be fixed on the wall which is firm, refractory and not easy to vibrate. - In places where there is 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 , 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 . Package list: 1 Meter