Bosch B9512G Installation And System Reference Manual page 85

Control Panels
Wire to the control panel
When wiring a module to a control panel, use the terminal strip labeled with PWR, A, B, and
COM to wire to terminals labeled 27 through 30 (or 23 through 26 if configured for SDI2) on
the control panel. For terminal wiring, use 18 AWG to 22 AWG (1.02 mm to 0.65 mm) wire. Do
not exceed a wire length of 1000 ft (300 m) from the control panel.
Route the cabling through the control panel enclosure, and through the EN4200 housing.
Bosch Security Systems, Inc. Installation and System Reference Guide
Wireless modules | en 85
2016.06 | 08 | F.01U.303.996