Visual device of communicating

The utility model provides a visual device of communicating. The low -cost information and communication who has or not among the communication cable that just shows easily. Visual device of communicating (10) have: transformer (11), it will be followed the magnetic field that the LAN cable be connected with information and communication equipment produced and alternate into the electric energy when carrying out information and communication, amplifier circuit (13), it enlargies follows the electric energy of transformer (11) output, rectifier circuit (15), it will signal amplification after enlarge amplifier circuit (13) alternaties into the DC voltage, and luminous circuit (16), it is being supplied with it is luminous during rectifier circuit (15) DC voltage after the transform.