Satel ABAX 2 ACU-220, Manual, Page: 6 / 57

4 ACU-220 SATEL

Communication bus for connecting the controller to a SATEL control panel. [expander of
wireless devices for SATEL alarm control panels]

Controller firmware update capability.

Ability to remotely update the firmware of wireless devices (except for the ASD-250
wireless smoke detector).

Tamper protection against enclosure opening.

Tamper input.
3 Electronics board
Fig. 1. Controller electronics board.
antenna 2 (printed on the electronics board and designated as AN2).
DIP-switches.