1. The smart meter can only identify the unique electric card corresponding to it. When the user prepares to insert the card after purchasing electricity, he should check whether the meter is his own to avoid card insertion error. Judgment method of self-appliance watch: Turn off the switch in the watch box. If the home loses power at this time, prove that this watch is self-appliance.
    
2. After installing smart meters, the power supply department provides preset electricity charges for users who change meters. After installing and receiving electricity, they can start to use electricity. During this period, users can go to the power grid sales point of the power supply company to open an account to purchase electricity. When purchasing electricity for the first time, the preset amount of electricity will be automatically deducted.
    
3. After purchasing electricity, the user needs to insert the electricity purchase card into the electricity meter to recharge. When inserting the card, insert it into the electricity meter slot in the direction shown by the arrow. After the card is successful, you can pull out the electric card.
   
 4. After the power supply of the smart meter is interrupted, the circuit components of the electric energy meter are still working on power, so pay attention to safety. The card insertion operation should be performed by an adult to prevent electric shock.
    
5. The electric card of the smart meter should be kept properly, do not bend, pollute or immerse, avoid being in the environment of high temperature and high humidity, and keep away from the magnetic field. After the electricity purchase card is demagnetized or lost, it should go to the power supply department to apply for the card replacement in time.

Zhejiang Tepsung Electric Meter Co.,Ltd . was established in 1985. We specialize in the field of electronic and electromechanical energy meters. We have established a mature and professional team in instrument design, production and sales (pre-sales and after-sales), which has been widely praised at home and abroad. Professional supply of single-phase meters, three-phase meters,    kilo watt-hour meter    and other products. Welcome to consult and order: https://www.yhddb.com/product/electromechanical-kwh-meter/