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Your cart is empty.For vehicle IR system, it can leave a peaceful space for the drivers while passengers can use their IR headphones to listen their favourite movie/music quietly. One transmitters supports several IR headphones working simultaneously. To watch two different movies in the same row, you need to connect two transmitters to two DVDs respectively, one of which uses channel A and the other uses channel B. For home IR system, you can listen to your favorite late night TV show while your partner sleeps peacefully by your side. Or kids can use it to work with their IR headphones to watch cartoons. You don't need to put up with a huge brainstorm caused by the noise of children watching cartoons any more. Features: 1. Universal IR frequencies: Channel A: Left: 2.3MHZ, Right: 2.8MHZ; Channel B: Left: 3.2MHZ, Right: 3.8MHZ; 2. Suitable for any audio system, like car DVD, TV, CD, PC etc; 3. Operating distance up to 30 feet (in direct line of sight); 4. One transmitter supports several IR headphones to be used simultaneously; 5. Double PLL system for ultimate frequency stability; 6. No need manual pairing, no audio delay, no radio or wifi or microwaves interference; 7. Enter standby mode automatically after no signal is received for about 5 mins.