MODEL VOLVO PROGRAM A TEMPORARY PIN NOTE: This feature is not available on garage door openers 2 that have a green Smart/Learn button or an external receiver. A temporary 4-digit PIN can be programmed to allow access to visitors. Each programmed PIN can program one temporary PIN. The temporary PIN can be set for a number of hours or a number of door openings. Press any programmed PIN, then press and hold the * button until... 5 the light but blinks 3 times.