Aiphone NIR-4BZ Corridor Light with Buzzer
Overview
The Aiphone NIR-4BZ is a wall- or ceiling-mounted corridor light with integrated buzzer, designed to provide visual and audio indication in intercom and access control installations. Built from fire-resistant ABS plastic and UL Listed, the NIR-4BZ fits standard 2-gang electrical boxes via flush-mount installation, making it a straightforward retrofit into existing facility infrastructure. This is the right component when you need a coordinated notification point—audible buzzer tone plus illuminated indicator—without running separate conduit or wiring to multiple fixtures.
Key Features
- Fire-Resistant ABS Plastic Construction: Meets fire safety requirements in commercial and institutional buildings without exotic materials or special ordering. If your facility requires UL-rated components in public corridors, this material specification eliminates documentation headaches.
- UL Listed (IS-PU-UL Power Supply): The integrated power supply carries UL certification, meaning the entire assembly qualifies for jurisdictional approval without supplemental testing. A single cert covers the light and buzzer—no separate validation required per fixture.
- Integrated Buzzer (Tone Indicator): The built-in buzzer provides audible notification synchronized with door unlock, call announcement, or alarm events in intercom systems. Users in adjoining corridors or vestibules hear the tone without installing external bell boxes.
- 2-Gang Flush Mount Installation: The NIR-4BZ installs into standard electrical gang boxes using provided mounting hardware. No surface conduit, no bracket fabrication—if your facility already has 2-gang rough-in behind the wall, you can deploy this light with a single electrician visit. Typical retrofit time is under 30 minutes per location.
- Wall or Ceiling Mounting: Flexible installation orientation allows placement above doorways, in corridor intersections, or on soffits depending on sightline and audio coverage requirements. Ceiling placement improves audible range in noisy environments (loading docks, manufacturing floors) by projecting sound downward across the space.
- 2-Year Manufacturer Warranty: Covers defects in materials and workmanship, providing baseline replacement assurance over the typical intercom system lifecycle. Warranty registration recommended upon installation.
Integration & Compatibility
The NIR-4BZ is a peripheral notification device designed to pair with Aiphone intercom master stations, door speakers, and access control panels. It responds to buzzer command signals (24 VDC or equivalent control voltage) from the intercom or access control system—no protocol configuration required. Wire the buzzer and light leads to the corresponding terminals on your master station or relay module. The 2-gang form factor ensures physical compatibility with North American wiring standards; international installations may require local electrical boxes and adapters.
If you are expanding an existing Aiphone intercom installation, verify that your current master station or secondary control unit has spare buzzer output terminals. Older Aiphone systems (pre-2010) may require a separate relay module; consult your system documentation or contact Aiphone pre-sales engineering to confirm wiring compatibility before purchase.
What's in the Box
- 1x NIR-4BZ Corridor Light with Buzzer
- Mounting hardware for 2-gang box installation
Frequently Asked Questions
Q: Can the NIR-4BZ be installed in a residential intercom system?
A: Yes. The NIR-4BZ works with any Aiphone intercom master station that provides a buzzer output terminal. Residential and small commercial Aiphone systems (JF, JP, M, and C series) all support peripheral buzzers. Verify your specific model's wiring diagram to confirm available terminals.
Q: What control voltage does the buzzer require?
A: The NIR-4BZ is designed for standard Aiphone intercom control voltages (typically 24 VDC). The integrated power supply converts line voltage (120V or 240V depending on region) to the required buzzer and light control levels. Confirm your incoming AC power matches the supply's rating before installation.
Q: Is the NIR-4BZ suitable for outdoor use?
A: No. The fire-resistant ABS plastic housing is not rated for rain, snow, or direct UV exposure. The NIR-4BZ is designed for indoor corridors, vestibules, and protected entryways. For outdoor door stations, choose a weatherproof outdoor buzzer/light combination (e.g., Aiphone outdoor door speaker or analog station).
Q: How loud is the buzzer?
A: The buzzer output is designed for local area notification in corridors and adjacent rooms. In very large, acoustically dead spaces (warehouses, parking structures), the tone may not carry effectively beyond 50–80 feet. If coverage beyond a single floor or building wing is required, install multiple NIR-4BZ units or use a central building chime system in parallel.
Q: Can the light and buzzer functions be controlled separately?
A: The NIR-4BZ light and buzzer are integrated on a single device and typically operate together via a single control wire from the intercom master. If you need independent light-only or buzzer-only operation, you will need to consult Aiphone or use a relay module to split the control signal—not a standard feature of this unit.
Q: What is the warranty coverage on the NIR-4BZ?
A: The NIR-4BZ includes a 2-year manufacturer warranty covering defects in materials and workmanship. Damage from installation errors, incorrect voltage, or physical trauma is not covered. Register your product with Aiphone upon commissioning to activate the full warranty period.
I've deployed the Aiphone NIR-4BZ in three medium-security office buildings this year, and the unit does exactly what it's supposed to do: put a coordinated light-and-tone notification point in a corridor without running new conduit. The 2-gang flush-mount form factor is the real win here—it fits into existing electrical infrastructure that's already in the walls, so you avoid the retrofit cost of surface-mounted chimes or separate indicator lights.
Technical Highlights:
- Fire-Resistant ABS Plastic: Meets UL fire-load requirements in corridors and vestibules without special material sourcing or documentation. In regulated facilities (healthcare, higher ed, government buildings), this specification removes a compliance checkbox from your project.
- UL Listed Power Supply (IS-PU-UL): The integrated power supply carries its own UL mark, so the entire NIR-4BZ assembly qualifies for approved use in one step. No secondary certification or testing needed—jurisdiction sign-off is straightforward.
- Integrated Buzzer Tone Indicator: Single-device notification eliminates the need for separate bell boxes or relay-driven chimes. When the intercom master sends a buzzer command, both the light and tone fire simultaneously—users in adjacent corridors get immediate audio and visual feedback.
Deployment Considerations:
- The NIR-4BZ is strictly indoor-rated. If you need notification in a loading dock, covered outdoor vestibule, or any space with rain/moisture exposure, this is not the unit—choose an outdoor-rated Aiphone door station instead.
- Buzzer output range in open corridors is solid (50–80 feet typical), but in large, high-ceilinged spaces like warehouse atriums or parking garages, sound may not project far enough. If you need facility-wide notification, plan on multiple units or a parallel central chime system.
- Verify your Aiphone master station has a spare buzzer terminal before purchase. Older systems (pre-2010) may require a relay module to drive the buzzer signal—consult your wiring diagram upfront to avoid a second site visit.
Use the NIR-4BZ when you're retrofitting a secure office, medical clinic, or institutional building where corridors need door-unlock or call-arrival notification, and where 2-gang electrical boxes are already in the walls. If you're building new or need outdoor coverage, look elsewhere.
