DX Antenna CS/BS-IF & CATV Bi-directional Booster for Shared Use, 2K/4K/8K Compatible, 35dB Type, CW35MSG2 This is the item as shown in the photo. We also have multiple units in stock, so we can offer a discount if you purchase multiple items at once. Please request this in the comments section. * For bulk purchases, each item after the second one will be discounted by 500 yen. This booster is compatible with CATV (1000MHz) and amplifies CATV signals. It is used to strengthen radio waves when the TV signal is weak or when it is necessary to send TV signals to multiple TVs. This product has a high-shielding structure that is resistant to interference from radio waves such as professional radio and amateur radio, and is also less likely to cause interference. Amplification Bandwidth/Gain: CATV Uplink 36dB, CATV Downlink 35dB. For indoor use.