The electric energy meter and the indoor display are connected by wired or wireless communication, and RS485, PLC (power line carrier), RF, Wi-Fine, LoRa and other different types of communication methods will be used according to different application environments. STS split meter also plays a good role in preventing electricity tamper, the power bureau will use a highly sealed meter box to install the meter on an outdoor pole, the installation position is not easy for the public to reach and can not open the meter box; The act of preventing tamper without access to the meter cannot be implemented.