The Electroline EDA 2100 1 Port Cable TV HDTV Signal Booster Amplifier is a gray in-line amplifier designed to boost cable, satellite reception, and antenna signals with a signal gain of 15 dB. It is compatible with cable systems and suitable for enhancing TV signals in various home or office settings. This amplifier, with the model number EDA-2100, helps improve the quality of the signal received by your cable TV system for a more reliable and clearer viewing experience.