Maximum transmission distance:50m RF frequency:2400Mhz Transmit power:14DB :95DB Frequency Range:20HZ---20KHZ Product Specifications Sampling Rate:44.1Khz-192KHZ/24bit Support audio format:PCM TX power consumption:5V/160mA RX power consumption:5V/50mA Working temperature:-40-+85 Storage ambient temperature:-60-+120 Working environment humidity:-10-90%RH(non-condensing) Storage environment humidity:-5-95%RH(non-condensing) Transmitter Weight:16g Receiver Weight:16g Colour:As Shown Material:plastic Note:Please connect to the interface with the "ARC" mark! Otherwise the audio cannot be obtained. Some require manual setting of TV audio to ARC output,Such as: TV.For these thing method,please refer to the user manual of the TV or ask the TV customer service for help. This product is a wireless ARC transmitter that uses 2.4G technology for high-definition sound quality and delay-free transmission.The transmitter can transmit the ARC digital audio signal from a TV or projector to a receiver connected to the Sound Bar at a distance of 50 meters for listening.Use this product to solve the problem of cable clutter.Therefore,it is widely used in home audio and video,schools,squares,electronic games and other places. Package Contents: 1 * Transmitter 1 * Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.