This LFM-907T Wired 7 Channels FM Stereo Modulator has 7 Channels. It has the capability to transmit all Stereo Signals to Radio by FM Technology. It was designed with a new Compact size, and Light weight for easy installation. It adopts 7 FM Channels: (87.7/87.9/88.1/88.3/88.5/88.7/88.8) MHz. It's so effective and efficient that it will detect any signals going through the Wall, Ceilings, and Windows. Its Power Consumption is: 0.5W, and uses a PLL (Phase-Locked Loop) compound technology for better stability.