Nice Apollo Control Boards

The Nice Apollo control boards 633/634 have been replaced by the 635/636 control boards. Upgrading to the next board can be slightly confusing if you don't remember which one you purchased. Looking at the board, it may be confusing as well since it will say 633/634 on it, as in the below picture. This is due to using the same baseboard. The model number you don't have is covered up to save cost and ensure you get the absolute lowest price. The answer to knowing which one you have is simple; it all depends if you have a single or dual swing gate opener. If you have a single, you have the 633 and need to upgrade to the 635; if you have a dual, you have the 634 and need to upgrade to the 636.

Old Board Replacement Board Compatible Systems
633 635 Apollo 1500
634 636 Apollo 1600
833 835 Apollo 1550ETL, 3500ETL, 7000ETL, 7100ETL, 7200ETL, 7300ETL
834 936, 1050 Apollo 1650ETL, 3600ETL, 7000ETL-DUAL, 7100ETL-DUAL, 7200ETL-DUAL, 7300ETL-DUAL
- 310 Apollo 1500, 1550-1K, 1550ETL, 1551, 1600, 1650-1K, 1650ETL, 1651, Titan12L, Titan12L1