What you are viewing is the wireless transmitter kits catalog on totodeal.com. The wireless AV transmitter and receiver kits are widely used in transmitting audio/video signal of the VCD, DVD, camera, computer, satellite set-top box, digital television STB, network HD player. They adopt the advanced international 2.4GHz wireless transmission technology. And the effective transmission distance of the transmitter is very long. Besides,the transmitter support both NTSC and PAL standard. You can set several different frequencies according to your needs. Also, they are well-designed, very easy to install and carry. They can be be widely used in many occasions, such as school, bank, hospital, prison and so on. With a reasonable price, the wireless transmitting and receiving products on totodeal.com can be your best choice.