Description

The Edwards WG4WF-HVMHC is a white WG4 Series high-candela horn strobe designed for indoor and outdoor fire alarm notification applications. It combines a high-output piezoelectric horn with a clear-lens strobe in a rugged, weather-resistant enclosure suitable for demanding environments. The WG4WF-HVMHC configuration features a white housing, FIRE marking, and selectable high-candela output, and is designed for wall or ceiling mounting.

The appliance operates from a nominal 24 VDC or 24 VFWR Notification Appliance Circuit (NAC). Field-selectable horn pattern, horn volume, strobe mode, and candela settings allow the device to be configured for the specific audible and visual requirements of the protected space.

Product Functions

• Provides combined audible and visual fire alarm notification
• Designed for indoor and outdoor applications
• Supports wall or ceiling mounting
• White housing with FIRE marking
• Uses a clear-lens high-candela strobe
• Provides four field-selectable high-output candela settings
• Supports 102, 123, 147, and 161 cd indoor UL 1971 settings
• Uses an efficient piezoelectric horn
• Provides high and low horn volume selections
• Supports Temporal 3 horn signaling
• Supports continuous or coded horn operation
• Supports continuous strobe operation
• Supports temporal strobe operation (where permitted)
• Compatible with Genesis synchronization protocols
• Powered from a single NAC for horn and strobe
• Accepts 12–18 AWG field wiring
• Designed for temperatures from −40°F to 151°F
• Suitable for harsh indoor and outdoor environments

High-Candela Visual Notification

The WG4WF-HVMHC is the high-output strobe version of the WG4 horn strobe family. It provides four selectable candela settings for indoor UL 1971 applications:

• 102 cd
• 123 cd
• 147 cd
• 161 cd

The candela setting is selected using an internal switch and remains visible through a sealed viewing window after installation. This allows the device to be configured for different room sizes, mounting heights, and visibility requirements.

Outdoor Strobe Output

Strobe output varies under extreme environmental conditions. Edwards publishes reduced-output values for outdoor and low-temperature operation:

At −35°C (UL 1638):

• 41 cd
• 50 cd
• 60 cd
• 65 cd

At −40°C (CAN/ULC):

• 11 cd
• 14 cd
• 17 cd
• 18 cd

These values are separate from the standard indoor UL 1971 ratings and are used for environmental performance considerations.

Horn Operation

The WG4WF-HVMHC includes a 3.2 kHz piezoelectric horn.

Factory configuration:

• Pattern: Temporal (Temporal 3)
• Volume: High

Field configuration options:

• High or low volume selection (approx. 5 dB difference)
• Temporal or continuous/coded operation via jumper settings

This allows the appliance to be adapted for different evacuation strategies and code requirements.

Audible Output

Typical UL 464 sound output levels at 24 V:

• Continuous High: 94.7 dBA
• Continuous Low: 89.5 dBA
• Temporal High: 90.5 dBA
• Temporal Low: 85.4 dBA

Actual sound levels vary based on installation conditions such as room acoustics, mounting height, and ambient noise.

Temporal & Continuous Signaling

• Horn is factory set to Temporal 3 pattern
• Can be configured for continuous/coded operation
• Strobe is factory set for continuous operation
• Optional temporal flash mode available for specific applications (not ULC listed in some configurations)

Synchronization

The WG4WF-HVMHC supports Edwards Genesis synchronization protocols. When used with compatible control modules or power supplies, multiple strobes can flash in synchronized operation.

Compatible devices may include:

• SIGA-CC1S / GSA-CC1S
• SIGA-CC2A / SIGA-MCC1S
• Compatible booster power supplies
• Fire alarm control panels with built-in sync capability

Synchronization performance is designed to meet UL timing requirements when properly installed.

Electrical Specifications

• Nominal Voltage: 24 VDC / 24 VFWR
• Circuit Type: Shared NAC for horn and strobe
• Wire Size: 12–18 AWG
• Polarity: Polarized
• Candela Range: 102–161 cd (selectable)

Approximate current draw at 24 VDC:

• 102 cd: 240 mA
• 123 cd: 271 mA
• 147 cd: 327 mA
• 161 cd: 365 mA

At 24 VFWR:

• 390 mA / 400 mA / 486 mA / 540 mA (depending on setting)

Environmental Specifications

• Operating Temperature: −40°F to 151°F (−40°C to 66°C)
• Humidity: 0%–95% noncondensing
• Environment: Indoor / Outdoor rated
• Mounting: Wall or Ceiling

Suitable for harsh environments including parking structures, industrial areas, and exterior installations.

Physical Characteristics

• Height: 8.5 in (216 mm)
• Width: 5.6 in (142 mm)
• Depth: 1.4 in (36 mm)
• Housing Color: White
• Lens: Clear
• Marking: FIRE
• Weight: ~1.5 lb (0.68 kg)

Low-profile design supports both wall and ceiling installation.

Mounting Information

Approved mounting options include:

• Standard electrical backbox (indoor/outdoor rated as required)
• Model 449 or 74347U outdoor boxes (application dependent)
• WG4GSKT gasket for sealing applications
• Optional trim skirts (WG4WTS / WG4RTS)

The appliance is designed for flexible installation on walls or ceilings depending on coverage requirements.

Installation Information

Typical installation steps:

• Select approved wall or ceiling location
• Install appropriate electrical box
• Install gasket if required for environment
• Route NAC wiring with correct polarity
• Set candela level
• Configure horn volume and pattern
• Install and secure backplate
• Attach appliance cover
• Verify synchronization (if used)
• Test horn and strobe operation

Horn and strobe must be powered from the same NAC circuit.

Testing & Maintenance

Verify during testing:

• Horn activation and audibility
• Strobe activation and visibility
• Correct candela setting
• Temporal or continuous horn operation
• Synchronization (if applicable)
• Proper polarity and circuit supervision
• Secure mounting and sealing
• No moisture or corrosion
• Clear FIRE marking visibility

Inspection is typically required semi-annually or per AHJ requirements.

Product Identification

• Manufacturer: Edwards
• Model: WG4WF-HVMHC
• Series: WG4 Genesis
• Type: Wall/Ceiling Mount Horn Strobe
• Function: Audible and Visual Notification Appliance
• Housing: White
• Marking: FIRE
• Candela: 102–161 cd selectable
• Horn: 3.2 kHz piezoelectric
• Voltage: 24 VDC / 24 VFWR
• Mounting: Wall or Ceiling
• Environment: Indoor / Outdoor

Applications

Suitable for:

• Commercial fire alarm systems
• Indoor and outdoor notification systems
• Parking garages and structures
• Industrial facilities
• Warehouses
• Schools and universities
• Hospitals and healthcare facilities
• Hotels and hospitality buildings
• Government and institutional facilities
• High-rise buildings
• Mechanical and utility areas

The Edwards WG4WF-HVMHC Wall or Ceiling Mount Horn Strobe is designed for applications requiring high-output audible and visual fire alarm notification in both indoor and outdoor environments.

WG4WF-HVMHC Datasheet