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Kidde | Genesis G4 LED High Fidelity Wall Mount Speaker-Strobe, White, ALERT Marking, Multi-Candela Amber Lens, 25V/70V Mass Notification | G4HFWA-S2VMA

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SKU:
KD-G4HFWA-S2VMA

The Kidde Genesis G4 High Fidelity wall speaker-strobe delivers clear, intelligible voice audio for mass notification systems in commercial facilities. With a Speech Transmission Index (STI) of .81 - well above the .76 threshold for "excellent" - this appliance ensures occupants hear and understand emergency messages, not just alarms. Dual-voltage 25V/70V operation and field-selectable wattage taps (1/4W to 2W) let you dial in the right output for the space without swapping hardware.

Built for the commercial installer

The G4 mounts to standard 2-gang and 4-inch square electrical boxes with no special brackets. Pre-install and pre-wire using the GRSW room side wiring plate, verify continuity with the included diagnostics check bar, then snap the device into place. Undercover diagnostic test points give you circuit access without pulling the appliance off the wall. LED strobe technology draws significantly less current than legacy Xenon units, allowing longer wire runs and fewer booster power supplies per NAC circuit. Genesis LED strobes can share a circuit and field of view with existing Xenon strobes - no rip-and-replace required for retrofits.

Key features

  • High fidelity .81 STI audio: exceeds the "excellent" threshold for speech intelligibility in high-ambient-noise environments
  • Dual-voltage 25V/70V: field-selectable switch handles both voltage systems in a single SKU
  • 520Hz low frequency capable: meets NFPA requirements for sleeping areas in hotels, dormitories, and residential occupancies
  • LED strobe, ultra-low current: 28 mA draw allows more devices per circuit and longer runs than Xenon
  • Quick-swap ALERT marking: replaceable cover skins let you change or remove markings without replacing the device
  • Backwards compatible: mix with legacy Xenon Genesis strobes on the same NAC circuit and field of view

System requirements

Requires a GRSW-10 room side wiring plate (ordered separately, available in packs of 10). Mounts to any standard 2-gang or 4-inch square electrical box. Color-matched G4T trim rings and surface mount boxes available for non-standard openings.

Brand:
Kidde Commercial
Form factor:
Wall mount speaker-strobe, low-profile (1.5" protrusion)
Operating voltage:
25V / 70V (field-selectable)
Wattage taps:
1/4W, 1/2W, 1W, 2W (field-selectable)
Sound output:
78-87 dBA reverberant (UL 1480)
Speech Transmission Index:
.81 (excellent)
Low frequency:
520Hz capable
Strobe output:
75 cd (amber lens, multi-candela)
Strobe current draw:
28 mA (16-33 VDC) / 36 mA (16-33 VFWR)
Mounting:
2-gang and 4-inch square electrical boxes
Dimensions:
4.95" W x 5.78" H x 1.62" D
Wire gauge:
12 to 18 AWG, in/out screw terminals
Housing color:
White
Lens color:
Amber
Marking:
ALERT (quick-swap replaceable cover)
Compliance:
UL (S218, S5389), ULC, FCC, FM Approved
Required accessory:
GRSW-10 room side wiring plate (ordered separately)
Does this speaker-strobe support both 25V and 70V systems?
Yes. A field-selectable switch on the device lets you choose 25V or 70V operation. One SKU covers both voltage systems, reducing inventory.
What wiring plate does this require?
The GRSW-10 room side wiring plate is required and ordered separately (sold in packs of 10). Pre-install the plate, run and terminate wiring, verify continuity, then snap the speaker-strobe into place.
Can I mix this with existing Xenon Genesis strobes?
Yes. Genesis LED strobes are backwards compatible with Xenon Genesis strobes on the same NAC circuit and within the same field of view. No need to rip and replace an entire floor for a retrofit.
Does this meet 520Hz requirements for sleeping areas?
Yes. The G4 speaker-strobe is 520Hz low frequency capable, meeting NFPA requirements for notification in sleeping areas such as hotels, dormitories, and residential occupancies.
What is the STI rating and why does it matter?
The STI is .81, exceeding the .76 "excellent" threshold. Occupants can understand spoken emergency instructions clearly, even in high-noise environments - critical where voice intelligibility saves lives.
Can I change the ALERT marking after installation?
Yes. The ALERT marking is on a quick-swap cover skin. You can change it to a different marking or remove it entirely without removing or replacing the device.

Spec Sheet