Analog Audio Extender: Extend your RCA or 3.5mm stereo audio signal up to 500M over Cat5e/6 UTP cable. Please use oxygen-free copper CAT6 cable for signal integrity. (Note: CAT6 cable wire sequence must be 568B) Audio Converter: The receiver can output both RCA and 3.5mm stereo audio signals at the same time. Please note that the transmitter can only transmit RCA or 3.5mm stereo audio signals and cannot transmit both audio sources simultaneously. Pure Transmission: Long-distance transmission using differential digital signals through ADC technology to avoid interference and eliminate noise. Plug and Play: Easy to use, no driver installation required. Plug Type: EU Plug, compatible with countries such as Indonesia, Germany, France, Spain, and Italy. Color: Black Material: Aluminum alloy Voltage: AC220V Package Contents: 1 x Analog Audio Extender Transmitter 1 x Analog Audio Extender Receiver 1 x Adapter Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement allowance is +/- 1-3 cm. Only the items listed above are included; other products are not included.