15dB CS/BS-IF-UHF booster to strengthen TV signals. - Model: TCU15L1B - Type: CS/BS-IF-UHF booster (desktop type) - Amplification level: 15dB - Usage examples: Compatible with 110CS broadcasting, BS broadcasting, and UHF broadcasting - Power supply: AC100V/DC15V - Connection method: Instructions on how to connect to the TV are included - Features: Reinforces the level of TV signals - Notes: Requires attention to installation location and connection method The item has been opened, but it is likely that it has not been used much, or is in near-new condition. Operation has not been checked. Overall, it appears to be in good condition. Please refer to the description on the package for details. I am not knowledgeable about this item, so I may not be able to answer questions. No returns or refunds accepted. Thank you for viewing.