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.
