[. . . ] Determine your brand from an original hand held remote or locate the motor unit receiver. The receiver can be mounted on the back or side panel of the motor unit or could be mounted on the ceiling or wall. If your system has code switches they can be found in an original hand held remote or on the motor unit receiver. [. . . ] To program a second garage door opener brand after successfully programming the first: Determine brand, then follow the brand steps, choosing a different PIN and in step 1 enter 5, 6, 7, 8 instead of 1, 2, 3, 4. If unsuccessful, wait until keypad stops flashing, then begin at step 1. Keypad will light steadily for 5 seconds: After pressing any key or after entering a correct PIN. During this time you may stop, reverse or reactivate the door by pressing any number on the keypad. Mount the keypad out of the path of the moving garage door, but within sight of it. At least 4 inches of clearance is needed above the keypad in order to slide the cover up. Take battery out of compartment (it is not necessary to disconnect it). Mount the keypad using the two mounting holes and screws supplied, then reinsert battery, replace battery cover, and slide outside cover down. Exception: If your original hand held remote has 3 buttons and you are using the small button on left, place a 1; center button, place a 2; large button place a 3 in box 1 in the table above. Boxes 2 through 9, place number that corresponds with switch position. Write PIN here: Before initial programming, press and # together until keypad stops flashing. This erases previous programming and returns unit to unprogrammed factory setting. When programming to more than one door, do not clear keyless after a successful programming of the first door. If programming is unsuccessful, Check to be sure the code from TABLE above match's switch positions from your system. If you did not have any remotes and you set a 9 digit random code and you have a yellow, white or gray smart-learn button, press the smart-learn button and release it. Enter your 4-digit pin number and hold any additional number, the door should operate. Locate your systems code switch positions from an original hand held remote or the motor unit receiver. It will be located on the side or back panel of the motor unit (near the small grey wire antenna). [. . . ] Write PIN here: Before initial programming, press and # together until keypad stops flashing. This erases previous programming and returns unit to unprogrammed factory setting. When programming to more than one door, do not clear keyless after a successful programming of the first door. [. . . ]