Product Introduction: This product is a wireless audio transmitter, using 2.4G 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 repeatedlyswitching/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. Notice Please use the receiver and transmitter within a barrier-free distance of 50 meters, otherwise there will be sound pauses Features: Use 2.4G technology for high-definition sound quality without delay transmission External antenna, better transmission effect Automatic connection when power on Support RCA & 3.5mm port Input Support RCA & 3.5mm port Output Receiver can drive headphones Support two-way volume control Wide range of power interface Specifications: Maximum transmission distance:50m RX power consumption:5V/45mA TX power consumption:5V/150mA RF frequency:2400Mhz Transmit power:14DB SNR:67DB Frequency Range:20HZ---14.5KHZ Output the highest level:1.75Vp-p Working temperature:-40~+85℃ Storage ambient temperature:-60~+120℃ Working environment humidity:-10~90%RH(non-condensing) Storage environment humidity:-5~95%R（non-condensing） Case material:Aluminum Alloy Color:Black Package included: 1*Receiver 1*Transmitter 1*User Manual 2*USB Charge Power Cable Note: Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!