Secutron MRI-1251 Smoke Detector

The Secutron MRI-1251 is a commercial-grade smoke detector designed for use with compatible Secutron fire alarm systems. Engineered for dependable fire detection, this detector utilizes ionization sensing technology to quickly respond to fast-flaming fires, making it suitable for a wide range of commercial environments.

Its low-profile design blends seamlessly into ceilings while maintaining high performance and reliability. The MRI-1251 features rotary address switches for easy device identification, along with a visible LED indicator that provides clear status updates during normal operation, alarm conditions, and maintenance checks.

Designed for ease of installation and servicing, the detector uses a plug-in configuration that allows technicians to quickly install, test, clean, or replace the unit without disturbing field wiring. This makes it an efficient solution for both new installations and system upgrades in commercial fire alarm applications.

Features

• Ionization smoke detection for fast-flaming fire response
• Low-profile, aesthetically pleasing design
• Rotary address switches for simple device identification
• Bright LED status indicator for alarm and operational visibility
• Plug-in detector head for easy installation and maintenance
• Compatible with a range of Secutron detector bases
• Durable construction for long-term reliability
• Designed for indoor commercial fire alarm systems

Product Functions

• Detects airborne combustion particles associated with fire
• Sends alarm signals to the connected fire alarm control panel
• Provides continuous system supervision
• Supports individual device addressing for system identification
• Enables routine inspection, testing, and maintenance
• Offers visual indication of detector status via LED

Electrical & System Information

The MRI-1251 operates on compatible Secutron signaling line circuits and communicates directly with the fire alarm control panel. Rotary switches located on the detector allow technicians to assign a unique address to each device, simplifying system configuration and troubleshooting.

The detector requires installation on a compatible Secutron base, which provides electrical connection and mounting support. Its plug-in design allows for quick removal and replacement without affecting wiring or system integrity.

Mounting & Design

The Secutron MRI-1251 is designed to mount on compatible detector bases such as the MRI-B210LP low-profile base and other approved Secutron mounting options. Its compact, low-profile housing ensures a clean and unobtrusive appearance in commercial interiors.

The detector head can be easily removed for cleaning or replacement, reducing maintenance time and minimizing system downtime. This design also supports efficient periodic inspections required by fire safety standards.

Technical Specifications

Manufacturer: Secutron
Model: MRI-1251
Product Type: Commercial Smoke Detector
Detection Method: Ionization Smoke Sensing
Circuit Type: Signaling Line Circuit (SLC)
Addressing: Rotary Address Switches
Status Indicator: LED
Housing Style: Low Profile
Housing Color: White
Mounting: Compatible Secutron Detector Base Required
Recommended Base: MRI-B210LP
Application: Indoor Commercial Fire Alarm Systems

Applications

The Secutron MRI-1251 is ideal for commercial fire alarm systems requiring reliable smoke detection and precise device identification. It is commonly used in:

• Office buildings
• Educational facilities such as schools and universities
• Healthcare facilities including hospitals and clinics
• Hotels and hospitality environments
• Warehouses and storage facilities
• Retail stores and shopping centers
• Government and municipal buildings
• Industrial and light manufacturing facilities

This detector is well-suited for environments where fast response to combustion particles is critical for early fire detection and occupant safety.

MRI-1251 Datasheet