DX Antenna Co., Ltd. CS/BS-IF/UHF Booster (CU35MS2) This is a booster that amplifies CS/BS-IF and UHF, compatible with 4K8K satellite broadcasting (3224MHz). Used to strengthen the signal when the TV signal is weak or when you need to send the TV signal to multiple TVs. For small-scale housing complexes. It is small enough to fit neatly into the information board of a detached house. This product has a highly shielded structure that makes it less susceptible to radio waves such as Wi-Fi and mobile phones. Comes with gain adjustment VR. Input/output terminal/power terminal JEC: ±25KV (1.2/50μs). Compatible with 2 power supplies: AC100V and DC15V. Amplification band: UHF 35dB, BS/CS 28/35dB. JEITA HS mark certified. For indoor use. This product meets one or more of our company's environmental certification standards and bears the "THINK ECOLOGY" mark.