Peace be upon you This device is a signal booster (Booster) from the Japanese brand DX Antenna, designed to receive VHF/UHF radio and television signals. The device features a retro (classic) design that includes a black front panel with colored lines and an ON/OFF power switch with an indicator light. The device works to strengthen analog signals and was used in the past with televisions and video recorders (VTR). If you connect the electricity, the light turns on And the wire is cut Taif Taif