Press and hold the small black dot on the receiver first and don't let go, catch the power; After about 3 seconds after power on, let go of the small black dot; Press and hold the small black dot again for about 10-15 seconds. At this time, the receiver will turn into a green light flashing slowly; at this time, the receiver is in the state of frequency binding, and BIND is performed on the tuner or controller; at this time, the high The tuner or TANGO 2 will ask if you want to update the receiver, please press ENTER; if the tuner enters the state of blue flashing light, please wait for 1-2 minutes without pressing any button, wait until it reaches 100% Click until the lights of the tuner and the receiver turn into green lights that are not flashing, and the frequency binding is completed. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:black Material:PCB+plastic Package Contents: 1 x KIT