FW2831 - Control Relay Interface Module
High-Current Relay Control • Intelligent Interface • System Integration
FW2831
The FW2831 Relay Module is a high-current control interface designed for fire alarm systems. It provides relay output capabilities to control external devices such as fans, dampers, elevators, and other building systems during fire alarm conditions.
| Model Number | FW2831 |
| Product Name | Relay Module |
| Category | Control Module |
| Certification | UL Listed (UL864) |
| Manufacturer | Maple Armor / Tongfang |
| Warranty | 2-Year Standard |
| Relay Type | 2 Form C (SPDT) Electromechanical Relays |
| Relay Contacts | Dry Contacts (NO/NC/COM) |
| Contact Rating | 5A @ 30VDC, 2.5A @ 120VAC Resistive |
| Max Switching Current | 10A Inrush (100ms) |
| Max Switching Voltage | 250VAC, 30VDC |
| Contact Resistance | ≤ 100mΩ |
| Operating Voltage | 15-32VDC |
| Current Consumption | Standby: 2mA, Active: 15mA per relay |
| Communication Protocol | Proprietary MAP Protocol |
| Address Range | 1-159 (Programmable) |
| Isolation Voltage | 1500V RMS (relay to logic) |
| Operating Temperature | -10°C to +55°C (14°F to 131°F) |
| Storage Temperature | -20°C to +70°C (-4°F to 158°F) |
| Humidity | 10% to 93% RH (Non-condensing) |
| Enclosure | Plastic, DIN Rail Mountable |
| Dimensions (HxWxD) | 4.0" x 2.8" x 1.2" (102 x 71 x 30mm) |
| Weight | 0.35 lbs (0.16 kg) |
| Wire Gauge | 12-22 AWG for field wiring |
| LED Indicators | Power, Communication, Relay 1, Relay 2 |
| Expected Mechanical Life | 10⁷ operations (mechanical) |
| Expected Electrical Life | 10⁵ operations at rated load |
The FW2831 Relay Module is a dedicated control interface designed specifically for fire alarm system applications. It provides reliable relay outputs for controlling external devices such as HVAC equipment, elevator recall, smoke control systems, door releases, and other critical building functions during fire emergencies.
5A @ 30VDC / 2.5A @ 120VAC contact rating for controlling demanding loads.
Certified to UL864 standards for fire alarm system components, ensuring code compliance.
Advanced microprocessor-based design with programmable logic and status reporting.
Elevator recall and shutdown
HVAC system shutdown
Smoke control damper operation
Stairwell pressurization control
Door holder release
Emergency lighting control
Generator start/stop
Fire pump control interface
18-22 AWG for 15-32VDC power from FACP or separate supply.
Twisted pair for MAP communication (18-22 AWG).
12-16 AWG for relay load circuits based on current requirements.
Motors, solenoids, contactors require snubber circuits.
Incandescent lamps have high inrush currents.
Heaters, elements are easiest to switch.
Control elevator recall, stairwell pressurization, and HVAC shutdown.
Control ventilation systems, process shutdown, and emergency equipment.
Control smoke barriers, elevator recall, and critical system isolation.
High Capacity: 5A contact rating for demanding applications
Code Compliance: UL Listed for regulatory requirements
Flexible: Multiple control configurations
Reliable: Industrial-grade relays and components
Scalable: Expand system control capabilities
Serviceable: Easy maintenance and troubleshooting