Edwards EST CDR-3


PSNI Coder Module

Availability: In Stock

  • Factory New
Brand: Edwards FireAlarm.com Part #: B04A-1060 Categories: , Manufacturer Part #: CDR-3 Tag:


The CDR-3 Coder is a microprocessor based system option module that provides audio and dry contact coded outputs. The coder activates in response to alarm information received over a supervised RS-232 communications circuit from a fire alarm panel output port.

The CDR-3 provides five LED status indicators. The module is supervised for loss of RS-232 communications from the host panel. Should communications be lost, the module will enter the fail-safe mode and automatically send a temporal signal from the coder outputs. The supervised PSNI and temporal tone outputs also transmit supervisory tones for circuit supervision. Loss of 24 VDC power, and microprocessor failures are also supervised. Module failure indication is provided with a dry relay contact.


Weight 1 lbs



Edwards, EST

Production Status



  • Microprocessor controlled
  • RS-232 Input
  • 1,000,000 code possibilities
  • Active supervision of RS-232 port
  • Positive Successive Non-Interfering
  • Trouble output for coder failure
  • 2, 3, or 4 digit code selection
  • 4-Code output: 2 Tone, 2 dry contact
  • Tone codes: PSNI and March Time or Temporal
  • Dry Contact code outputs: PSNI and March Time or Temporal
  • Low Current
  • Fail Safe operation mode
  • Dip Switch Selectable operating modes
  • Mounts in cabinet in 1/2 size footprint space

Coders Models CDR-3 (PSNI) MTM-1 (March Time)

Edwards - Data Sheet