PURPOSE: To display a variety of information on a television scope and to simplify the constitution by adding a plenty of functions such as a timer, display of fee and distance, weather forecasting, temperature display and an image receiver to a television set connectable to a telephone set and connecting a telephone line with the aid of a three-phase plug socket.

CONSTITUTION: A telephone set connecting plug socket is inserted into a three- phase plug socket of a television connnectable to a telephone set, and a telephone set is connected to a telephone set connecting terminal. Functions such as a timer, display of distance and fee, weather forecasting (opposite party), temperature display (opposite party), image receiver (camera) and a speaker are provided to the television set. It allows communications to an opposite telephone set, displays a variety of information on a television scope, and facilitates monitoring of various types of information with simple constitution.