Mircom MIX-2251RAP Intelligent Smoke Sensor with Remote Test

The Mircom MIX-2251RAP Intelligent Photoelectric Smoke Sensor with Remote Test provides addressable smoke detection for compatible Mircom fire alarm systems. It combines a photoelectric sensing chamber with addressable-analog communication, allowing the sensor to transmit smoke-density information directly to the fire alarm control panel.

Its low-profile plug-in design, remote testing capability, Advanced Protocol communication, and dual LED indicators make the MIX-2251RAP suitable for professional fire alarm detection and compatible duct smoke detection applications.

Intelligent Photoelectric Smoke Detection

The Mircom MIX-2251RAP uses photoelectric sensing technology to detect smoke. The sensor continuously communicates an analog representation of smoke density to the compatible control panel, where detector sensitivity can be monitored and programmed.

Point identification allows each detector to have an individual address. Therefore, technicians can identify the specific detector requiring inspection or maintenance.

Remote Test Capability

One of the primary features of the MIX-2251RAP is its remote test capability for duct applications. When the detector is used with compatible DN duct equipment, testing can be performed remotely using approved test accessories, eliminating the need for a test coil.

This feature can make routine inspection and testing more convenient, especially when duct detectors are installed in difficult-to-access locations.

Advanced Protocol Communication

The MIX-2251RAP supports Mircom Advanced Protocol (AP), providing high-speed communication between intelligent devices and compatible fire alarm control equipment.

Mircom states that Advanced Protocol can support up to 318 devices per SLC circuit. AP devices can also operate in CLIP mode for applicable legacy system applications.

Key Features

• Intelligent addressable photoelectric smoke detection
• Remote test capability for duct applications
• Dual LED status and alarm indication
• Rotary switches for direct address selection
• Magnetic test and tamper-resistant features
• Advanced Protocol with CLIP backward compatibility

Electrical and Environmental Specifications

The Mircom MIX-2251RAP operates from 15 to 32 VDC. Standby current is specified at 300 µA at 24 VDC, while maximum LED current is 6.5 mA at 24 VDC.

The standard operating temperature range is 32°F to 120°F (0°C to 49°C). For duct applications, Mircom specifies a range of -4°F to 158°F (-20°C to 70°C). Operating humidity is 10% to 93% non-condensing, and the UL-listed air-velocity range is 0 to 4,000 fpm.

Low-Profile Plug-In Design

The MIX-2251RAP uses a low-profile plug-in configuration that simplifies detector mounting and replacement. Mircom lists the B501 Intelligent Flangeless Mounting Base and B210LP Intelligent Flanged Mounting Base for this sensor.

When installed in the B210LP base, the sensor measures approximately 2.0 inches high and 6.1 inches in diameter. When installed in the B501 base, its diameter is approximately 4.1 inches.

Dual LED Status Indication

Two integrated LEDs provide visual detector status information. The control panel can operate these LEDs to indicate communication and alarm conditions, with the LEDs illuminating steadily during an alarm.

The detector also provides an output for the optional RA-100Z Remote LED Annunciator, allowing remote visual indication where required.

Commercial and Duct Applications

The Mircom MIX-2251RAP can support addressable smoke detection in offices, schools, healthcare facilities, hotels, commercial properties, institutional buildings, and other facilities equipped with compatible Mircom fire alarm systems.

Its remote test capability makes the detector particularly useful in compatible duct smoke detection applications where convenient inspection and testing are important.

System Compatibility

The MIX-2251RAP requires compatible addressable communications and should be connected only to a compatible fire alarm control panel. Its rotary address switches allow technicians to assign the detector’s address directly at the device.

The MIX-2251RAP is also a legacy model. Mircom’s end-of-line notice states that it was discontinued for new orders after February 28, 2022, with the MIX-2351RAP identified as an alternate model.

Overall, the Mircom MIX-2251RAP Intelligent Photoelectric Smoke Sensor with Remote Test combines addressable photoelectric detection, remote duct testing, Advanced Protocol communication, and convenient status indication for compatible Mircom fire alarm systems.

MIX-2251RAP Datasheet