This product have two body ,one is transmitter the other is receiver.the transmitter is change the IR to RF and sender it to receiver.when the receiver is received the RF and change to the IR. We can place the transmitter to our bedroom ,and place receiver to our mainroom.we can control the STBVCD and so on in our bedroom. the transmitter frenqence is 433.92MHz.[...]

AV transmitter: 1) Operating frequency band: 2.400 - 2.4835GHz 2) Transmit power output: 10dBm 3) Modulation: FM (video and audio) 4) Video input level: 1Vp-p at 75 ohms 5) Audio input level: 1Vp-p at 600 ohms (stereo) 6) Input port: 3 phono (L and R audio, video) 7) Antenna: integrated omini directional 8) IR-remote IR output: 940nm with On / Off keying 9) Power consumption: 9VDC, 400mA AV receiver: 1) Operating frequency band: 2.400 - 2.4835GHz 2) Sensitivity: -80dBm minimum 3)[...]

RZ2822A is small speaker with TDA2822. 1 input DC=5V(usb and batter) 2 3.5mm audio input[...]

USB audio speaker is able to play two channels PC audio through FULL_SPEED USB bus,IT is compliance with the Universal Serial Bus specification V2.0 Full_speed.and High performance 48KHz sampling rate for audio playback.Two channel audio Class-d Amplify for speaker driving.wu have supply more about this USB audio speaker ![...]

2.0-channel changable Volume adjustable stereo earphone plug Output power: 6W Antimagnetic speaker design 3-inch all frequency unit Available in various colors THD: 0.2% (1W 1KHz[...]