Thorn 986080 Digital Dialer Interface Circuit Board

Description:

The Thorn SRA-550 Digital Dialer Interface Circuit Board (P/N 986080) is used in addressable fire alarm control systems to interface compatible Digital Alarm Communicator Transmitters (DACTs) with the fire alarm control panel for central station alarm reporting. Commonly installed in Autocall TFX-500, TFX-800, TFX-500M, TFX-800M, TFX-500MV, TFX-800MV, and DirecTone 500 fire alarm systems in commercial, industrial, healthcare, and institutional facilities. Fire alarm technicians and system integrators use this interface board for system upgrades, preventive maintenance, DACT integration, and replacement of failed communication interface modules.

Applications:

The Thorn SRA-550 Digital Dialer Interface Circuit Board provides a communication interface between compatible Autocall fire alarm control panels and external digital alarm communicator transmitters, allowing alarm, supervisory, suppression, smoke detector, manual station, waterflow, and trouble conditions to be transmitted to a central monitoring station. It is widely used in commercial buildings, hospitals, schools, industrial plants, and other life safety installations requiring compliant off-site fire alarm monitoring.

Technical Specifications:

• Brand: Thorn / Autocall
• Model: SRA-550
• Part Number: 986080
• Assembly Number: 976080
• PCB Number: 940572
• Product Type: Digital Alarm Communicator Transmitter (DACT) Interface Module
• Function: Fire Alarm Digital Dialer Interface
• Compatible Systems: Autocall TFX-500, TFX-800, TFX-500M, TFX-800M, TFX-500MV, TFX-800MV, DirecTone 500
• Supply Voltage: +24 VDC
• Maximum Output Current: 1.0 A
• Standby Current: 10 mA
• Alarm Current: 30 mA
• Relay Outputs: 7 Programmable Outputs
• Monitored Events: Alarm, Supervisory, Suppression, Smoke Sensor, Alarm Station, Waterflow, Trouble
• Fault Input: 1 Active-Low Input for DACT Fault Monitoring
• Mounting Position: B2 or PB2 Slot on MP-500 Main Processor Board
• Dimensions: 3.5 × 4.625 × 1 in.
• Standards: UL 864, NFPA 71, NFPA 72
• Application: Fire Alarm Central Station Communication Interface

Common Replacements:

• Autocall SRA-550 Assembly 976080
• Autocall CVB-500 Reverse Polarity Transmitter Module 976030
• Autocall CEB-500 City Box Transmitter Module 976031