This 816-BLK is a factory replacement actuator arm for the Nice Apollo 1550-1K, 1550-ETL, 1551, 1650-1K, 1650ETL, and 1651 Swing Gate Operator Systems. This replacement actuator arm comes with 12 ft cable for easy installation. Is compatible with 633, 634, 635, 636, 833, 834, 835, 836, 936, 1050, and Mercury 310 control boards.
eBay