The code I’m talking about here is the transmitter and receiver. There are two types of code, one is fixed and the one is rolling.
If you have a garage door opener system that uses fixed code then you’re in luck of getting any universal garage door opener remote control replacement. Because it uses fixed code and chances are in the 433mhz.
If you have a rolling code garage door opener system then you will not be able to use the fixed code universal replacement remote control. I have not come accross any universal garage door opener remote control replacement for your rolling code system yet. I don’t think it’s that easy to find if it even exist, because if it does exist then there will be great opportunity for home robbery.
If you have a rolling code, you might need to contact the manufacturer and get the replacement model same type, and reprogram the code.