Software House (Johnson Controls) G2-RM-DCM-2 and G2-RM-4E OSDP Door Control and

The G2-RM-4E module allows distributed control of an access control door for distances up to 4,000 ft / 1,200 m from the iSTAR controller.  Featuring up to 4 supervised inputs and 3 wet/dry selectable outputs, the G2-RM-4E simplifies field wiring for even the more advanced door installations.

The G2-RM-4E Door Module, when provided in a UL listed, tamper-protected metal enclosure, is called the G2-RM-DCM-2. The G2-RM-DCM-2 provides standby power with an optional (not included) Sealed Lead Acid (SLA) battery and is designed

to support up to two G2-RM-4Es and a choice of up to two I8 input boards or R8 output boards in RM Mode, providing a single enclosure for doors with IN and OUT readers.  Note that when used in OSDP mode, a single G2-RM-4E can support a door with IN and OUT readers, since the readers are configured as separately addressed OSDP devices, i.e. the G2-RM-4E is address 1, the IN reader is address 2, and the OUT reader is address 3 on an RS-485 comm port from the ISTAR controller.

G2-RM-4E modules have the unique flexibility of working in 2 different modes: RM mode for backwards compatibility with the Software House “RM” protocol, and OSDP mode for enhanced security, all in a single board.  When in OSDP mode you can take advantage of secure channel communications featuring AES-128 encryption, firmware download, configurable supervised inputs, and the ability to control an entry/exit door using a single G2-RM-4E.

The G2-RM-4E is identical to the legacy RM-4E door module in size, mounting dimensions and wiring connectors, providing an easy field upgrade from the RM-4E to the G2-RM-4E.  For customers considering a tech refresh to OSDP readers this drastically reduces cut-over time during the upgrade.