Remote communication device with a security function and a meter for measuring electrical power, which uses the remote communications device

There is a remote communication device having a security function proposed, as well as a remote meter for measuring electrical power, which uses the device. The remote communication device having a security feature, comprising: a security algorithm application unit, which decrypts a received signal that has been received from a communications network, in the case where the reception signal is an encrypted signal and a transmission signal which is transmitted to the communication network, encrypted; and a protocol unit for converting the received signal or the decrypted by the security algorithm application unit received signal according to a specified communication protocol, and for generating a transmission signal according to the specified communication protocol.