DATA TRANSMITTER

PROBLEM TO BE SOLVED: To save wiring except for the transmission line of a data transmitter for controlling the measurement and monitoring of electric properties especially in the level of a panel board in a reception/distribution system. SOLUTION: A current transformer 8, a conductive material 2 passing through the current transformer 8, a voltage transformer 9 connected to the conductive material 2, an A/D conversion part 10 which converts the analog output signals of the current transformer 8 and the voltage transformer 9 into digital signals, an arithmetic processing part 11, a transmission part 12 exchanging information with a central device, a power source part 21 connected to the conductive material 2, an input part 20 and an output part 18 are integrally formed in a casing.