To connect with a smartphone: Insert the standard phone adapter into the pogo-pin port at the bottom of the transmitters and connect with your phone. Start shooting or recording on your phone and the receiver will start working. To connect with a camera: The receiver can be mounted on a camera via the hot shoe adapter. Use a 3.5mm camera connection cable to connect the camera mic port and the 3.5mm audio output port on the receiver. Then, start recording videos on your camera and the receiver will start working. To connect with a computer: Use a 3.5mm camera connection cable to connect the mic port of your computer with the 3.5mm audio output port of the receiver. Start recording on your computer and the receiver will start working.