Appendix G: Peripherals Galaxy Flex Installer Manual240Door control moduleDoor control modules (DCMs) can be added onto the RS485 bus line to add fully integratedaccess control. Each DCM allows up to two Wiegand readers to be connected to control twoseparate doors; each door with an exit button or one door with an entry and exit reader.Installation and mountingThe DCM can be supplied installed in a standard plastic RIO box or within a Power RIObox.Mounting the RIO box1. If necessary, remove the DCM PCB from the box to allow access to the screw holes.2. Fix the base to the mounting surface, using the screw holes provided.3. Bring all cables into the enclosure via the base cable entry points. There are six cableentry holes.4. Attach the RIO box lid with the four thread forming screws provided.Mounting the power RIO boxThe DCM is mounted above the control PCB on a mounting plate.1. Remove the screws securing the left hand control PCB to the box.2. Fit the four mounting pillars supplied with the kit in place of the PCB screws.3. Fit the mounting plate to the pillars and secure using the screws removed from the PCB.4. Attach the DCM to the mounting plate using the plastic clips supplied.