Features:1. 4K HDMI matrix switcher.2. 3 in 2 out HDMI matrix switcher.3. With SPDIF and L / R 3.5mm HDMI audio extractor.4. Support ARC function 4Kx2K @ 60Hz / 3D / 1080P with infrared remote control.5. The HDMI matrix has three HDMI input sources and two output HDMI signals that can simultaneously project the same image to two different displays.6. You can flexibly switch between three input source outputs via remote infrared control.7. You can enjoy the sound of high-quality sound system, such as LPCM 7.1 / DOLBY-AC 3 with optical isolation, optical digital terminal, RCA output terminal.Specifications:Three HDMI signal inputs are switched or assigned to two HDMI signal outputs to the display device.Any HDMI signal can be independently output via fiber or stereo headphonesSupport: full HD 2160P, 1080P full 3D, 4K*2K.Support: 24, 30, 36, 48 dark colors.Compatible: with HDCP1.2 /1.4 Support HDMI-CEC/Support 36-bit True Color 64-bitSupport: any HDMI signal processingOutput parameters: 3860*2160p HDCP 1.4 HDR 4K*2KSupport: Blu-ray DVD24/50/60fs/HD.DVD/xvYCCSupport: for the player format DTS.HD/Dolby.trueHD/LPCM7.l/DTS/DOLBY.AC3/DSDSupport: signal timing re-automatic recovery recognition.Support: ARC function. Transfer TV audio  sound back to the amplifier audio through the HDMI cable.Use AWG26 HDMI standard cable, input transmission distance up to 10 meters, output transmission distance up to 15 meters Can be controlled by infrared control, can be controlled directly by buttonThe optical output audio format can be switched by remote control. The HIFI audio format is determined by the source.When restarting or resetting, the default input signal HDMI will be 1.LED status indication to make the working status of the product clear at a glanceExternal  power adapter. Remote control: 5V/2A 3.5 audio cable to R/L.No signal loss.Package List:1 * HDMI Matrix Switcher1 * Power Adapter1 * Remote Control (with CR2025 button battery * 1)1 * Audio Cable1 * SPDIF Line1 * User Manual1 * SPDIF dust plug