Carrier watt-hour meter has the function of carrier meter reading. In recent years, electric energy meter manufacturers all over the country have designed carrier meter reading and RS485 meter reading to meet the requirements of power supply bureau. Carrier meter reading is to install a carrier chip in the meter, and then install a transformer and meter reading device.

Meter reading means that after the signal is sent to the meter reader through the computer, the meter reader sends the signal to the carrier chip through the power line. After the carrier chip is moved, the data is transmitted back to the meter reader for storage. When users need data, they can use the computer to erase the data from the meter reader. The advantage is that it is not like 485, but it cannot copy real-time data. You can only copy it in the meter reading cycle you wrote, and save it in the meter reading device after copying it back.