JOHNSON CONTROLS RDR2SA CONTROL MODULE S300-D1N-RDR2SA, 24-10239-472

The RDR2SA is a Remote Dual Relay/Two-Channel Supervised Auxiliary Module for Johnson Controls (formerly Simplex/Grinnell) TrueAlert and TrueAlarm emergency communications and fire alarm systems. It is part of the Simplex 4000/4100U and 4010/4020 legacy product families.

Its primary function is to provide two remotely located, configurable Form-C relays and two supervised input circuits for monitoring auxiliary devices, all while communicating on a single addressable loop.

Key Functions and Features

1. Dual Configurable Relays:

   • Provides two physically separate Form-C relay outputs (SPDT – Single Pole, Double Throw).

   • Each relay can be independently programmed via the system software for various functions, such as:

     • Alarm Control: Activating horns, strobes, or other notification appliances in a specific zone.

     • Equipment Control: Shutting down HVAC, closing fire doors, controlling dampers, or releasing magnetic door holders.

     • Supervisory or Trouble Signals: Indicating conditions like sprinkler valve closure.

2. Two Supervised Input Circuits (Auxiliary Monitor Points):

   • Each input circuit can monitor a normally open (N.O.) or normally closed (N.C.) dry contact from an external device.

   • Used to monitor the status of devices not on the addressable loop, such as:

     • Waterflow switches and valve tampers (supervisory signals).

     • Conventional smoke or heat detectors (alarm signals).

     • Manual pull stations.

     • Guard tour stations.

3. Addressable Loop Device:

   • Connects directly to the SLC (Signaling Line Circuit) loop of a compatible Johnson Controls/Simplex fire alarm control panel (FACP).

   • Occupies two consecutive addresses on the loop (one for the relays, one for the inputs).

   • Communicates status (Normal, Active, Trouble) back to the main control panel.

4. Supervision and Style Options:

   • The input circuits and wiring are supervised, meaning the panel can detect open circuits, short circuits, and wiring faults.

   • Can be wired in Style Y (Class B) or Style Z (Class A) configurations for high reliability.

Typical Applications

• Expanding System Outputs: Adding relay control points where needed without running individual wires back to the main panel.

• Integrating Non-Addressable Devices: Bringing the status of conventional devices (like waterflow switches) onto the intelligent addressable loop.

• Notification Appliance Circuits (NAC) Control: Remotely powering and controlling horns, strobes, or speakers in a specific area.

• Building System Interface: Providing a reliable fire alarm interface to control HVAC, elevator capture, door release, or other life-safety functions.

Technical Specifications

• Model: RDR2SA (S300-D1N-RDR2SA)

• Catalog Number: 24-10239-472

• Compatibility: Simplex 4000/4100U, 4010/4020, and other legacy Simplex panels using the same protocol.

• Loop Voltage: Operates on the SLC loop voltage provided by the panel.

• Relay Contacts: Form-C, rated for 2.0 amps @ 30VDC resistive.

• Inputs: Two supervised, configurable for N.O. or N.C. dry contacts.

• LED Indicators: Power, Active, and Trouble LEDs for status indication.

• Wiring: Terminals for SLC In/Out, Relay outputs, and Input circuits.

• Mounting: Typically mounts in an electrical enclosure or directly to a 4-gang electrical box backplate.