Edwards EST 3-SDDC2


Dual Signature Driver Controller. Comes with two 3-SDC1s. Mounts to Local Rail.

Availability: In Stock

  • Factory New
Brand: Edwards FireAlarm.com Part #: 65086 Categories: , Manufacturer Part #: 3-SDDC2 Tags: ,


The 3-SSDC2 and 3-SDDC2 Signature Driver Controller modules provide an intelligent interface between the CPU module and Signature Series devices. Each module contains its own microprocessor used to coordinate, process and interpret information received from and sent to Signature devices. Power and communications is received directly from the control panel rail assembly. The 3-SSDC2 Single Signature Driver Controller module supports one Signature Data circuit, while the 3-SDDC2 Signature Dual Driver Controller module supports two Signature circuits. Both modules occupy one rail space in the fire alarm control cabinet and provide removable field wiring terminals to aid installation.

Innovative design gives the 3-SSDC2/3-SDDC2 and Signature devices truly “distributed intelligence”. Signature detectors and modules have their own on-board microprocessor communicating with the loop controller in a fully digital communication format. This increases the accuracy of the information coming to and from the loop controller by reducing the effects of capacitance and noise.

With decentralized intelligence much of the decision making moves from the loop controller to the devices. Advanced fire detection algorithms processed within the Signature devices effectively end unwanted alarms. Environmental compensation and multiple sensing element decision making operations are resident in the devices. Intelligent devices allow the Signature Controllers to execute communication and system functions with greater speed and low baud rates, increasing the accuracy of information transmitted between the loop controller and devices.


Weight 1.00 lbs



Edwards, EST




Option Card


Driver Module


24 VDC


Production Status



  • One or two circuit versions
  • Dedicated microprocessor control
  • Full digital communication
  • Specialized communication protocol
    • Less sensitive to cable characteristics
    • Utilize existing wiring in most applications
  • Device location supervision
    • Unexpected additional device addresses
    • Missing device addresses
    • Switched device locations
    • Programmed device parameters
  • Automatic nonvolatile as-built mapping
    • Stores “actual” and “expected” device data
    • Stores physical connection sequence including “T” taps
  • Automatic day/night sensitivity
  • Supports up to 250 Intelligent Signature Detectors and 250 Intelligent Signature Modules
  • Up to five 3-SDDC2s or ten 3-SSDCs per node
    • Maximum of 10 signature circuits per cabinet
  • Removable field wiring terminal blocks
  • Multiple survival modes − stand alone
  • Fully backwards compatible with 3-SSDC, 3-SDDC, 3-SSDC1, and 3-SDDC1
  • Supports the full line of Signature devices, including carbon monoxide detection

Signature Driver Controller Modules


Edwards - Data Sheet