2.4G Wireless Audio Transmitter And Receiver, Rca/3.5Mm Jack Input/Output With This product is a wireless audio transmitter, using2.4G technology for high-definition sound quality without delay transmission,The transmitter can transmit the 2.0 analog stereo audio signal of RCA and 3.5mm audio interface to the receiver at a distance of 50 meters for listening. Using this product can solve the problem of tedious operation of repeatedly switching/setting the output audio format of the signal source and the problem of messy cable binding. Therefore, it is widely used in home audio-visual,schools, squares, electronic games and other places. 1?2.4G No Delay Audio Transmitter?This wireless audio transmitter collect RCA/3.5mm analog audio from TV, DVD, etc. and transmits it to audio systems within 50m/160ft through external antenna, Solve the problem of cable confusion in wired transmission. 2. Transmitter :RCA /AUX analog audio input interface on the transmitter side, connect to the audio source when in use (such as: TV,DVD, set-top box, EQ mixer) 3. Receiver :The 3.5mm or RCA analog audio output interface on the receiver side can be connected to headphones or the audio system. 3.5mm audio interface of Receiver can drive headphones. 4. Matching Methods?This product has been paired before leaving the factory, and it can be automatically connected when it is turned on within the effective distance (50meters/160ft without obstacles). If rematching is required, please refer to the instruction manual provided with the product 5. Volume Control ?Both the transmitter and receiver with volume adjustment knob. Receiver can drive headphones.