I Wish Vevor would stock additional fobs as I tried 3 different types to no avail. I dismantled the remote fob to find it is 433.92 MHZ with a rolling code HCS 301 chip set. (hard to find the correct ones online) It would have been so much easier if these details were in the instructions. I ended up adding a WIFI garage door open receiver & a more common 24 V 433 MHZ Fob receiver.