SDI Address Device Description
0 = Installer Keypad, or local connection to RAM IV
1-8 = Command Center 1 to 8
40,41 = DX8010 Telephone Control Module
50,51 = RF Receivers 1, and 2
52-55 = RF Keypads on RF Receiver 1
60-63 = RF Keypads on RF Receiver 2
101-107 = DX 2010 wired point expander
150-151 = DX 3010 Octo-Output expander
250 = DX4010 Serial RS-232 Interface module
