Technical Specifications
| Model Number | FW151 |
| Product Name | Voice Control |
| Category | Voice Evacuation System |
| Certification | UL Listed (UL864) |
| Manufacturer | Maple Armor / Tongfang |
| Warranty | 2-Year Standard |
| System Type | Digital Voice Evacuation |
| Audio Output Power | 25W RMS per channel |
| Frequency Response | 300Hz - 4kHz (±3dB) |
| Total Harmonic Distortion | < 5% at rated output |
| Signal-to-Noise Ratio | > 70dB |
| Voice Message Storage | Up to 64 messages |
| Message Duration | Up to 30 seconds each |
| Language Support | Multi-language (up to 8 languages) |
| Zone Control | Up to 32 zones independently controlled |
| Operating Voltage | 24VDC Nominal (18-32VDC range) |
| Current Consumption | Standby: 100mA, Active: 500mA typical |
| Power Consumption | 12W (at 24VDC, typical operation) |
| Operating Temperature | 0°C to +55°C (32°F to 131°F) |
| Storage Temperature | -20°C to +70°C (-4°F to 158°F) |
| Humidity | 10% to 93% RH (Non-condensing) |
| Enclosure Material | Steel with powder coating |
| Mounting Type | Wall Mount (rack or surface) |
| Dimensions (HxWxD) | 3.5" x 16" x 8" (89mm x 406mm x 203mm) |
| Weight | 8.8 lbs (4.0 kg) |
| Wire Gauge | 14-22 AWG for audio lines |
| Terminal Type | Screw Terminals |
| Communication Interface | RS-485, Ethernet (optional) |
| Message Recording | Digital recording capability |
| NFPA 72 Compliance | Yes (2019 Edition) |
| ADA Compliance | Yes (provides clear voice instructions) |
| Expected Life | 10 years minimum |
Audio Quality Performance
Poor
Average
Good
Standard
Excellent
Premium
FW151 delivers "Excellent" audio quality with >70dB SNR and <5% THD for clear voice intelligibility
Voice Message System
Digital voice evacuation with up to 64 pre-recorded messages
Product Overview
The FW151 Voice Control is an advanced digital voice evacuation system designed for modern fire alarm and emergency notification applications. Using high-quality digital audio processing technology, it delivers clear, intelligible voice messages that provide specific instructions during emergencies, greatly enhancing occupant safety and evacuation efficiency.
Clear Voice Messages
High-quality digital audio with >70dB SNR for clear, intelligible voice instructions.
Multi-Language Support
Supports up to 8 languages for diverse occupant requirements.
Zone Control
Independent control of up to 32 zones for targeted messaging.
Key Characteristics
Clear Audio: 25W RMS per channel with >70dB SNR
Message Storage: Up to 64 pre-recorded messages
Multi-Language: Support for up to 8 languages
Flexible Control: Up to 32 independently controlled zones
Reliable: UL864 certified for emergency voice systems
Integration: RS-485 and optional Ethernet communication
Standard Message Types
Fire Evacuation
"Fire alarm, please evacuate immediately"
Emergency Alert
"Emergency situation, follow instructions"
All Clear
"All clear, you may return to normal activities"
Test Message
"This is a test of the emergency voice system"
Voice Evacuation Benefits: Studies show that voice evacuation systems improve evacuation times by 30-50% compared to tone-only systems. Clear voice instructions reduce confusion, provide specific guidance, and can be tailored to different zones or building sections. The FW151's digital audio processing ensures message clarity even in noisy environments.
Product Features
Audio Features
- Digital audio processing technology
- 25W RMS power output per channel
- >70dB signal-to-noise ratio
- <5% total harmonic distortion
- 300Hz - 4kHz frequency response
- Digital message storage (up to 64 messages)
- Message duration up to 30 seconds each
System Features
- Up to 32 independently controlled zones
- Multi-language support (up to 8 languages)
- Digital recording capability
- RS-485 communication interface
- Optional Ethernet connectivity
- Message priority and sequencing
- Automatic message validation
Construction Features
- Steel enclosure with powder coating
- Rack or wall mount design
- Screw terminal connections
- Knockouts for conduit entry
- Ventilation for thermal management
- Tamper-resistant design
- Status indicator LEDs
Safety & Compliance Features
- UL864 certified for emergency voice
- NFPA 72 compliant (2019 Edition)
- ADA compliant voice instructions
- Short-circuit and overload protection
- Reverse polarity protection
- Automatic self-test functionality
- Battery backup compatibility
Message Planning: Effective voice evacuation requires careful message planning. Messages should be clear, concise, and provide specific instructions. Consider multiple languages based on occupant demographics. Test messages for intelligibility in various building areas with typical ambient noise levels.
Installation & Configuration
Rack Mount
Standard 19" rack installation
Wall Mount
Surface wall mounting
Control Room
Fire command center installation
Installation Guidelines
- Install in clean, dry, temperature-controlled area
- Maintain proper ventilation around unit
- Follow NEC and NFPA 72 requirements
- Provide adequate working clearance (36" minimum)
- Use proper conduit and wiring methods
- Ensure secure mounting to wall or rack
- Verify audio circuit impedance matching
Wiring & Configuration
Power Requirements
24VDC, 500mA typical, with battery backup.
Audio Configuration
Set message priority, zones, and languages.
Load Calculation
Include voice control in power supply calculations.
Audio Testing
Verify intelligibility at all speaker locations.
Installation Steps
- Select installation location per NFPA 72 requirements
- Mount unit securely to wall or 19" rack
- Route power wiring in approved conduit
- Connect audio lines to speaker circuits
- Connect communication lines (RS-485/Ethernet)
- Connect 24VDC power with proper polarity
- Program messages and zone assignments
- Configure language settings
- Test audio output at each speaker location
- Verify message clarity and intelligibility
- Document installation and programming
- Provide operator training
Audio System Guidelines
Sound Level
Minimum 75 dB or 15 dB above ambient.
Intelligibility
STI ≥ 0.5 or AI ≥ 0.7 in all areas.
Language
Multiple languages for diverse occupancy.
Compatibility & Applications
Compatible Systems
- Maple Armor FW2000 Series FACP
- Maple Armor FW2100 Series
- Maple Armor FW2200 Series
- Most addressable fire alarm systems
- Compatible with standard audio amplifiers
Typical Applications
- High-rise office buildings
- Hospitals and healthcare facilities
- Shopping malls and retail complexes
- Educational institutions
- Transportation hubs (airports, stations)
- Hotels and convention centers
Application Scenarios
High-Rise Buildings
Zone-specific evacuation instructions for different floors.
Healthcare
Defend-in-place or phased evacuation instructions.
Education
Clear instructions for students and staff.
Benefits
Clear Communication: Specific voice instructions reduce confusion
Code Compliance: UL864, NFPA 72 compliant
Flexible: Multi-language and zone control
Reliable: Digital audio with high intelligibility
Scalable: Supports up to 32 zones
Serviceable: Easy maintenance and testing
Emergency Communication Strategy: Voice evacuation systems are particularly valuable in complex buildings where different evacuation strategies may be needed for different areas. The FW151's zone control capability allows for targeted messaging - for example, evacuating only affected floors while keeping other areas in place, which is especially important in healthcare facilities where patient movement may be difficult.
