Description
The Mircom MIX-2251B Intelligent Addressable Detector Head provides reliable photoelectric detection for compatible Mircom fire alarm systems. It combines optical sensing technology with individual device addressing and a low-profile housing. In addition, its plug-in construction supports convenient installation, inspection, and maintenance.
Intelligent Photoelectric Detection
The Mircom MIX-2251B uses an optical sensing chamber to monitor airborne particles associated with developing fire conditions.
When particles enter the chamber, they scatter light within the sensing assembly. The detector evaluates this information and communicates its operating condition to a compatible fire alarm control panel.
Therefore, the system can identify potential fire conditions and initiate the appropriate programmed response.
This technology also helps maintenance personnel identify individual device locations.
CLIP Addressable Communication
The detector supports Classic Loop Interface Protocol, commonly called CLIP.
This communication method allows compatible Mircom fire alarm control panels to communicate with individual devices on a signaling line circuit.
Installers assign the device address using rotary decimal switches. As a result, the control panel can identify the exact location of an activated detector head.
However, CLIP is a legacy communication protocol. Technicians must verify panel compatibility before installation.
Low-Profile Plug-In Design
The detector features a compact housing designed for professional fire alarm installations.
Its plug-in construction allows technicians to attach or remove the detector head from a compatible mounting base.
Consequently, maintenance personnel can replace the head without changing the entire mounting assembly.
The mounting base is a separate accessory unless the seller specifically includes one.
Automatic Sensitivity Monitoring
The MIX-200 Series supports sensitivity monitoring through compatible fire alarm control panels.
The system evaluates detector information and can identify conditions that require maintenance.
For example, dust accumulation inside the optical chamber may affect sensing performance over time.
Therefore, sensitivity monitoring helps technicians recognize when inspection or cleaning becomes necessary.
Key Features
- Intelligent addressable photoelectric detector head
- Mircom MIX-200 Series
- Enhanced optical sensing chamber
- Classic Loop Interface Protocol (CLIP)
- Rotary decimal address switches
- Low-profile plug-in construction
- Individual device identification
- Dual LED status indicators
- Automatic sensitivity monitoring
- Magnetic functional testing
- Low standby current
- 15–32 VDC operating range
- Electromagnetic interference protection
- Compatible with selected Mircom mounting bases
- Optional remote LED indication
- Suitable for compatible legacy fire alarm systems
- Designed for professional installation
Dual LED Status Indication
The detector includes two visible LED indicators.
During normal operation, the LEDs can indicate communication with the fire alarm control panel. When the system recognizes an alarm, the indicators illuminate according to the panel configuration.
As a result, technicians can identify the activated device during inspection and troubleshooting.
Electrical Specifications
The detector operates from 15 to 32 VDC through a compatible signaling line circuit.
Its maximum average standby current is approximately 300 microamps at 24 VDC under the manufacturer’s specified communication conditions.
In addition, the maximum LED current is approximately 6.5mA at 24 VDC.
Therefore, installers should include these values when calculating the available SLC capacity.
Compatible Mounting Bases
The detector supports selected Mircom mounting bases, including the B501 and B210LP.
Compatible relay and isolator base options include the B224RB and B224BI.
These mounting options provide flexibility for approved installations.
However, technicians must verify the exact base and panel compatibility before ordering.
Environmental Specifications
The detector operates from 32°F to 120°F (0°C to 49°C).
It supports relative humidity from 10% to 93%, non-condensing. In addition, the approved air velocity range extends up to 4,000 feet per minute.
Consequently, installers should confirm environmental conditions before selecting the device.
Typical Applications
This intelligent detector head supports compatible commercial and institutional fire alarm systems.
Typical applications include offices, schools, hotels, healthcare facilities, warehouses, and industrial properties.
It is particularly relevant for maintaining existing installations that use Mircom CLIP communication.
Moreover, its plug-in design can simplify replacement when the existing mounting base remains compatible.
Installation and Compatibility
Before installation, confirm the fire alarm control panel, SLC protocol, device address, and mounting base.
Also, verify the required sensitivity settings and environmental limits.
Qualified fire alarm professionals should install, configure, and test the detector head. Furthermore, technicians should follow Mircom instructions and applicable fire alarm codes.
Overall, this Mircom addressable detector head provides dependable optical detection for compatible legacy fire alarm systems. Its low-profile design, rotary addressing, sensitivity monitoring, and CLIP communication make it a practical option for professional maintenance and replacement projects.





Reviews
There are no reviews yet.