Make the transmitter/ receiver powered with included power adapter is suggested. After connected to power, the transmitter and receiver will automatically power on and enter paring mode.
1Mii 2.4GHz Wireless Audio Transmitter/Receiver - Transmits from my living room stereo to my bedroom stereo where bluetooth cannot reach. Really small size - each unit about the size of match boxes. I am impressed. Transmitter is plugged into tape (line) out, receiver is plugged into AUX In.