Aiphone NIR-MB Wall Jack Microphone for NIR-8 Intercom Systems
Overview
The Aiphone NIR-MB is a flush-mount wall jack with integrated microphone designed for use with the NIR-8 nurse call and intercom system. This component serves as the user-facing audio interface in patient rooms, corridors, and multi-tenant facilities where staff need to respond to calls and communicate without requiring a dedicated handset. The NIR-MB fits standard 1-gang electrical boxes, making retrofit and new installations straightforward in existing wall cavities.
Key Features
- Flush-Mount Form Factor: Installs directly into a standard 1-gang electrical box, eliminating the need for surface-mounted equipment. Cleaner aesthetics and lower snag risk in healthcare and hospitality settings where wall-mounted hardware can interfere with patient movement or cleaning protocols.
- Fire-Resistant ABS Plastic Housing: Constructed from fire-resistant ABS, meeting building code fire safety requirements in hospitals, long-term care facilities, and commercial office buildings. Reduces the liability of non-compliant materials in patient-accessible areas.
- Integrated Microphone: Built-in microphone eliminates the need for a separate handset or external audio device. Simplifies wiring, reduces clutter at the wall interface, and provides consistent audio input across multiple stations in the same system.
- Compact Dimensions (4-3/4" H × 2-3/4" W × 1-15/16" D): Minimal footprint fits seamlessly into standard wall boxes without requiring oversized electrical work. Ideal for installations in corridors, patient rooms, and common areas where space is constrained or aesthetic impact must be minimized.
- NIR-8 System Integration: Designed specifically as a peripheral for the Aiphone intercom NIR-8 platform, ensuring full compatibility without adapter cables or protocol translation. Works in multi-room, multi-zone installations where centralized call distribution and staff coordination are required.
- Standard Installation Compatibility: No special mounting brackets or wall preparation required beyond the standard electrical rough-in. Licensed electricians and security integrators can provision the unit with existing infrastructure and tools.
Integration & Compatibility
The NIR-MB serves as a remote audio endpoint within an Aiphone intercom system architecture. It connects to the NIR-8 master station via standard 4-wire (analog) or proprietary Aiphone twisted-pair cabling, making it suitable for retrofit into existing nurse call and commercial intercom installations. When deployed in healthcare environments, the unit works alongside complementary Aiphone components such as the NIM-20B or NIM-40B master stations (call handling and dispatch), call reset buttons (NIR-2), and corridor light indicators (NIR-31, NIR-32, NIR-34) to create a complete staff-alerting and communication network. For multi-tenant office buildings and corporate campuses, the NIR-MB integrates into larger Aiphone JP and JV series video intercom deployments, providing audio-only endpoints in areas where video is not required or desired.
Power is supplied to the NIR-MB through the main system controller, typically via the 48V DC power supply (IS-PU-UL, UL listed) that feeds the entire intercom network. No local power connection or PoE infrastructure is required at the wall jack itself.
Installation and Mounting Considerations
Installation of the NIR-MB requires a standard 1-gang electrical box roughed into the wall during framing or retrofit work. The unit mounts flush with the finished wall surface, with cable entry through the box knockouts. Typical runs involve 4-conductor (or 2-pair) interconnect wire from the NIR-MB back to the main system control unit or an intermediate distribution panel. In healthcare applications, local code and facility infection-control policies may require specific conduit or plenum-rated cabling depending on building classification and ventilation zoning. Consult your local AHJ and the Aiphone technical knowledge base for wiring specifics and conduit requirements for your jurisdiction.
Frequently Asked Questions
Q: Does the NIR-MB work as a standalone device?
A: No. The NIR-MB is a peripheral component designed exclusively for use with the Aiphone NIR-8 nurse call and intercom system. It requires a master station (such as the NIM-20B or NIM-40B) to handle call routing, dispatch, and system logic.
Q: Can I install the NIR-MB in an existing 2-gang electrical box?
A: The NIR-MB is designed for standard 1-gang boxes. Installation in a 2-gang box is possible but will leave unused space. Standard practice is to use a single-gang box or a 1-gang reducer plate to maintain a professional appearance.
Q: What is the maximum wire run distance from the NIR-MB to the master station?
A: Distance limits depend on the gauge and type of interconnect wire used and the specific system configuration. Consult the NIM Installation and Operation Manuals (available through Aiphone technical support) for wire gauge recommendations and maximum run lengths for your installation voltage and audio signal requirements.
Q: Is the NIR-MB suitable for outdoor or wet locations?
A: No. The NIR-MB is designed for indoor wall mounting only. It is not rated for outdoor, wet, or corrosive environments. For outdoor intercom endpoints, refer to other Aiphone product families such as the IX or GT series video intercoms, which include weatherproof housings.
Q: Can I use multiple NIR-MB units on the same NIR-8 system?
A: Yes. The NIR-8 system is designed to support multiple remote endpoints. The exact maximum number of NIR-MB units per system depends on the master station model (e.g., NIM-20B supports up to 20 stations; NIM-40B supports up to 40). Consult the system specification sheet or your Aiphone sales engineer for your specific configuration.
Q: What happens if the microphone fails after installation?
A: The microphone is integrated into the NIR-MB housing and is not user-serviceable. If the microphone fails, the entire unit must be replaced. Contact your local Aiphone distributor or dealer for replacement and warranty service options.
The Aiphone NIR-MB is a straightforward but essential piece in the NIR-8 ecosystem — a flush-mount audio interface that does one job quietly and reliably. In healthcare and multi-tenant buildings where you need bedside or hallway call stations without visual clutter, the NIR-MB's 1-gang box form factor and integrated microphone eliminate cable runs and panel congestion that plague visible handset installations.
Technical Highlights:
- Fire-Resistant ABS Plastic: Meets building code fire safety mandates in hospitals and long-term care facilities, critical when the unit is mounted in patient-accessible areas where non-compliant materials can trigger inspection failures or code violations.
- Integrated Microphone Design: Eliminates the need for a separate handset or external mic, reducing wiring complexity and lowering the point-of-failure count. One cable run per station instead of two.
- 1-Gang Flush Mount (4-3/4" H × 2-3/4" W × 1-15/16" D): Fits standard electrical rough-in without requiring oversized boxes or special framing. Retrofit retrofits into existing walls without demolition or conduit relocations, keeping labor costs predictable.
Deployment Considerations:
- Wire gauge and run-length limits apply — consult the NIM installation manual for your specific voltage and cabling specifications. Undersized conductor gauges over long distances will attenuate audio and trigger compliance failures.
- The NIR-MB is system-dependent: it cannot operate without a master station (NIM-20B or NIM-40B). If you are sizing a system, account for the controller's channel capacity — NIM-20B handles up to 20 remote endpoints, NIM-40B up to 40. Overflow requires a second master unit.
Deploy the NIR-MB in patient room or nurse-station clusters where staff need rapid call acknowledgment without video, or in office corridors where audio-only intercom is sufficient and cost or privacy concerns rule out video endpoints. Its fire-rated housing and compact footprint make it a strong fit for code-critical healthcare renovations and phased multi-tenant office builds.
