GTO Gate Operator Notes:
Control Boards
01/05/01 - AQ227 no longer available. Substitute AQ251. AQ227 was for the SL1000 and SL1200 prior to UL-325 changes in March 2000. The new AQ251 is UL325 compliant. It has a warning beeper and other changes. This new board is also for the PRO2000 and new and old SL1000 and SL1200.