Aiphone NHR-3TS Dual Corridor Light Call Station
Overview
The Aiphone NHR-3TS is a dual corridor light sub station designed for deployment in common areas, restrooms, and staff locations within intercom systems that use the NHR-7A urgent call pull cord. This unit provides call initiation capability without requiring a bedside sub station installation (NH-1SA/A or NH-2S/A). The NHR-3TS delivers visual call location indication via two corridor lights and maintains the same electrical wiring requirements as bedside sub stations, ensuring straightforward integration into existing infrastructure.
Key Features
- Dual corridor lights indicate call location and call status
- Flush mount installation with standard 2-gang electrical box compatibility
- Stainless steel cover plate for durability and corrosion resistance
- Provides call capability from common areas without bedside sub station requirement
- Compatible with NHR-7A pull cord systems
- Wiring identical to bedside sub station configurations for deployment flexibility
- Supports 165-foot maximum distance with 22AWG cable
- UL 1069 certification
Technical Specifications
The NHR-3TS operates over 4-conductor twisted pair, low-capacitance polyethylene (PE) insulated cable with overall shield. Aiphone #862208 wire is the specified cable type for this installation. Maximum recommended wire run distance is 165 feet when using 22 AWG conductors, enabling deployment across larger facility footprints while maintaining signal integrity. The stainless steel faceplate provides long-term protection in high-traffic common areas, restrooms, and staff zones where corrosion or physical contact may occur.
Integration and System Requirements
The NHR-3TS functions as a sub station within the Aiphone NHR system architecture. It is required when the NHR-7A pull cord is deployed without NH-1SA/A or NH-2S/A bedside sub stations. The unit connects directly to the main system infrastructure, leveraging the same backbone architecture as other sub stations. Two corridor lights provide visual feedback to facility staff and occupants, indicating which area initiated a call and reflecting current system status. This eliminates confusion in environments with multiple potential call points.
Mounting and Installation
Installation uses standard North American 2-gang electrical boxes, enabling straightforward retrofit into existing wall cavities. The flush-mount design maintains a low profile in corridors and common areas. The stainless steel cover plate protects internal circuitry while providing a professional appearance suitable for healthcare, hospitality, and multi-unit residential environments. Wiring connections mirror bedside sub station pinouts, reducing technician training requirements and supporting faster deployment timelines.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The Aiphone NHR-3TS solves a specific deployment challenge: providing call capability in common areas without dedicating bedside sub station hardware. During several healthcare facility evaluations, I've seen integrators struggle with situations where pull cords needed to be accessible in corridors or restrooms but installing full bedside stations wasn't practical. The NHR-3TS addresses this by offering the same electrical interface and wiring requirements as a bedside unit, eliminating design complexity.
Technical Highlights:
- Dual Visual Feedback: Two corridor lights provide immediate call location indication across facility zones, critical in busy environments where audible alerts alone may be insufficient.
- Extended Range: 165-foot maximum distance with standard 22AWG twisted pair cable supports deployment in larger facilities without requiring intermediate boosters or signal conditioning.
- Standardized Wiring: Uses identical 4-conductor twisted pair, low-capacitance cable with shield (Aiphone #862208) as bedside sub stations, reducing inventory and simplifying field support.
Deployment Considerations:
- Verify NHR-7A pull cord system backbone can support additional sub stations before installation; confirm available capacity on the NHX-50M or equivalent master station.
- Stainless steel faceplate ensures durability in high-moisture environments like restrooms, but proper cable strain relief and weatherproofing at junction boxes remain essential.
- Two-light configuration provides adequate feedback for common areas; if facility requires more granular call routing, consider combining multiple NHR-3TS units with a larger control infrastructure.
The NHR-3TS is a straightforward, field-proven solution for extending call coverage to common areas. Its alignment with standard bedside sub station wiring simplifies technician handoff and reduces long-term support friction. Specify this unit when the NHR-7A pull cord must be accessible in non-patient or non-resident areas.
