Description The Edwards EST 3-MODCOM is a modem and Digital Alarm Communicator Transmitter (DACT) module designed for EST3 fire alarm systems. It provides remote upload/download capability, central station reporting, and dual-line telephone supervision for reliable off-premise communications. Technical Specifications Condition New/Never Used Surplus Brand Edwards EST Category Fire Alarm Systems Part Number 3-MODCOM Subcategory Communicator / DACT Type Two-way local rail module Modem V.32bis, 14.4K baud, full duplex Communication Upload/download of system data via telephone line DACT Protocols DIA DCS, Contact ID, 3/1 and 4/2 pulse formats Pager Protocol Supports alphanumeric pager “tap” Phone Line Supervision Two loop-start telephone lines Messages Fully programmable with alarm override of upload/download Reporting Split/multiple reporting to up to 80 receivers Subscriber Accounts Supports up to 255 accounts Firmware Field-upgradable Compatibility EST3 systems; supports mounting behind control/display modules Power Supply Powered by EST3 system power supply Survivability Transmits alarms in degraded mode during network CPU failure Standards Listed for fire and security communications Dimensions 10.5 in L × 2.3 in W × 1.8 in H Weight 0.5 lbs Information About 3-MODCOM The 3-MODCOM is an Edwards EST modem communicator module developed to handle off-premise communications for EST3 systems. It integrates both a full-duplex modem and a digital alarm communicator, enabling remote programming and reporting to central monitoring stations. Supporting a wide range of transmission protocols, the 3-MODCOM can split or distribute reports to up to 80 different receivers and manage as many as 255 subscriber accounts. With dual-line supervision, field-upgradable firmware, and alarm override functions, it ensures dependable connectivity. Additionally, in degraded mode, it continues to transmit essential fire alarm messages even if the main CPU fails. Key Features: Integrated Modem/DACT: Combines a 14.4K baud modem with digital alarm communication for flexible connectivity. Remote Access: Provides upload and download of system configuration and data via telephone lines. Wide Protocol Support: Transmits using DIA DCS, Contact ID, 3/1, and 4/2 formats; supports pager “tap” protocol. Dual-Line Supervision: Monitors two loop-start telephone lines for reliability. Programmable Reporting: Capable of split or multiple reporting to as many as 80 receivers. Subscriber Capacity: Manages up to 255 subscriber accounts for large-scale applications. Survivability: Maintains reporting ability in degraded mode during CPU failure. Firmware Flexibility: Field-upgradable firmware ensures adaptability to new requirements. Modular Installation: Fits in one EST3 rail slot; can be mounted behind control/display modules. Standards Listed: Approved for both fire and security communication functions. The 3-MODCOM delivers the reliability and precision required for critical off-premise communication in Edwards EST3 fire alarm systems.
