- Enables use of Electro-Mechanical lock
- Enables use of Program Selectors (however not required if using a 3 position switch only)
- Connection for installation of a second opening device (sensor or button)
- Priority-opening connection (to bypass night closure, for example)
- Battery connection
- Required when using on fire doors
- Required on each operator using the breakout arm
- Suits DAB105 & DAB205
