1, the remote control and your receiver belong to the same band;
2, the band currently used in the market is 315MHz, 433MHz and 2.4 GHz. It will tell you the corresponding frequency at the time of purchase;
3, if it is simply to purchase the remote control with the original receiver, then you must first know which band your remote control is working in;
4, the method is to bring your remote control to the manufacturer's pairing, or turn on your receiver to find a three-foot ceramic filter with a brown plastic envelope on the circuit board. The marked characters on the above are to see which of the two is the same. Buy the remote control at this value;
5, while looking at the circuit board, but also observe on the top a dial code switch, remember the position and order of the dial code switch, this is the main parameter that must be known when the remote control is provided;
Fulfill the above requirements and you can continue to use your garage door automatic remote control to open and close.