NOU Output Unit

FW2331 - Notification Appliance Expansion Module

Intelligent Output Control • NAC Expansion • Audio/Visual Integration

NOTIFICATION EXPANSION
FW2331 Fire Alarm Control Panel
Component

NOU Output Unit

FW2331

Intelligent
NAC Expansion
Quality Tested
Easy Install

The FW2331 NOU (Notification Output Unit) provides intelligent output expansion for fire alarm notification appliance circuits. It enables system scalability and supports additional audio/visual notification devices.

Technical Specifications

Model NumberFW2331
Product NameNOU Output Unit
CategoryNotification Expansion Module
CertificationComponent Rated
ManufacturerMaple Armor / Tongfang
Warranty2-Year Standard
Output Channels2 Independent NAC Circuits
Circuit Capacity1.5A per Circuit, 3A Total
Output Voltage24VDC (Nominal)
Communication ProtocolProprietary NOU Protocol
Data Rate9600 bps
Power Supply24VDC @ 500mA
Power ConsumptionStandby: 75mA, Active: 300mA
Operating Voltage18-30VDC
Operating Temperature-10°C to +55°C (14°F to 131°F)
Storage Temperature-20°C to +70°C (-4°F to 158°F)
Humidity10% to 93% RH (Non-condensing)
EnclosureMetal, DIN Rail or Panel Mount
Dimensions (HxWxD)5.5" x 8.5" x 2.5" (140 x 216 x 64mm)
Weight2.0 lbs (0.91 kg)

Product Overview

The FW2331 NOU (Notification Output Unit) is an intelligent output expansion module designed to extend the notification appliance circuit capacity of Maple Armor fire alarm systems. It provides additional output circuits for audio and visual notification devices.

Dual NAC Circuits

Two independent notification appliance circuits with 1.5A capacity each.

Intelligent Control

Advanced microprocessor control with real-time monitoring and diagnostics.

Easy Installation

Simple DIN rail or panel mounting with clear terminal connections.

Notification Capabilities

Supports audio notification devices

Supports visual notification devices

Synchronized strobe capability

Temporal code 3 alarm pattern

March time pattern

System voice messaging

Test mode activation

Walk test support

Product Features

Output Capabilities
  • Two independent NAC circuits
  • 1.5A per circuit capacity
  • Class A or Class B wiring
  • End-of-line resistor monitoring
  • Short circuit protection
Communication Features
  • Proprietary NOU communication protocol
  • 9600 bps data rate
  • Error detection and correction
  • Real-time status reporting
  • Remote diagnostics capability
Diagnostic Features
  • LED status indicators per circuit
  • Circuit supervision monitoring
  • Short circuit detection
  • Open circuit detection
  • Ground fault detection
Physical Features
  • Metal enclosure for EMI protection
  • DIN rail mounting (standard 35mm)
  • Panel mount option available
  • Screw terminal connections
  • Clear labeling and indicators
Notification Expansion: The FW2331 NOU Output Unit enables cost-effective expansion of notification appliance circuits without replacing existing fire alarm control panels, making it ideal for building renovations and system upgrades.

Installation & Configuration

DIN Rail Mount
Standard 35mm DIN rail mounting
Panel Mount
Direct panel mounting option
Rack Mount
19" rack mounting available
Installation Guidelines
  • Mount in dry, protected location
  • Ensure proper ventilation
  • Follow local electrical codes
  • Use proper cable strain relief
  • Maintain minimum clearance around unit
Wiring Requirements
Power Wiring

14-16 AWG for 24VDC power. Separate power supply or FACP power.

Data Wiring

Shielded twisted pair for NOU communication (18-22 AWG).

NAC Wiring

12-18 AWG for notification circuits. Follow NEC requirements.

Configuration Steps
  1. Mount the NOU Output Unit in desired location
  2. Connect power supply (24VDC)
  3. Connect data communication cables to FACP
  4. Connect NAC circuits to notification devices
  5. Install end-of-line resistors as required
  6. Power up and verify communication
  7. Configure through FACP programming

Applications & Compatibility

Compatible Systems
  • Maple Armor FW2000 Series
  • Maple Armor FW2100 Series
  • Maple Armor FW2200 Series
  • All Maple Armor FACP with NOU ports
Supported Devices
  • Audio Notification Devices
  • Visual Notification Devices
  • Speaker Strobes
  • Horn Strobes
  • Chimes & Bells
Application Scenarios
Building Expansions

Add notification circuits for new building wings or floors.

System Upgrades

Upgrade existing notification systems without panel replacement.

Industrial Facilities

Additional notification circuits for high-noise industrial areas.

Benefits

Cost-Effective: Avoid complete system replacement

Time-Saving: Quick installation and configuration

Flexible: Multiple mounting options

Reliable: Industrial-grade construction

Scalable: Multiple units can be cascaded

Serviceable: Easy maintenance and troubleshooting