This is the genuine and original CHAMBERLAIN GRIFCO CG844 transmitter, which is normally used for wireless control of commercial or industrial building. Compatible with the following motors/receivers:
A replacement CG844R would be sent to you.
If you have two different brand of garage door openers and you want use one remote to operate two doors. A two in one remote which item 2-in-1-CG844+Forza1200 remote is availble to purchase.
This one is upgraded to CG844R.