Mircom MIX-2251APA Smoke Detector

The Mircom MIX-2251APA Intelligent Photoelectric Smoke Detector provides addressable smoke detection for compatible Mircom fire alarm systems. It combines photoelectric sensing technology with intelligent communication to provide accurate smoke detection and individual device identification. In addition, its low-profile design makes it suitable for many commercial and institutional fire alarm applications.

Intelligent Photoelectric Smoke Detection

The Mircom MIX-2251APA uses an optical sensing chamber to detect smoke produced by a wide range of combustion sources. Photoelectric technology provides effective detection while supporting dependable operation in compatible addressable fire alarm systems.

The detector continuously communicates with the fire alarm control panel. Therefore, the panel can monitor detector sensitivity, device status, and alarm conditions.

This intelligent operation also allows the system to identify the exact detector location. As a result, technicians can quickly locate devices that require inspection, cleaning, or maintenance.

Advanced Protocol Communication

The detector supports Mircom Advanced Protocol communication. This high-speed protocol improves communication between intelligent devices and compatible control panels.

Advanced Protocol uses group polling and an interrupt feature to support faster alarm response. In addition, compatible systems can support up to 318 devices on an SLC circuit.

The detector can also operate in CLIP mode for compatible legacy applications. Therefore, it provides useful flexibility when servicing existing Mircom installations.

Key Features

• Intelligent addressable photoelectric smoke detector
• Advanced Protocol communication
• Optical smoke sensing chamber
• Low-profile detector design
• 15 to 32 VDC operating range
• Approximately 300µA standby current at 24 VDC
• Maximum LED alarm current of 6.5mA at 24 VDC
• Dual LED status indicators
• Rotary address switches
• Magnetic test capability
• Automatic sensitivity monitoring
• Superior EMI protection
• Advanced Protocol and CLIP compatibility
• Suitable for air velocities up to 4,000 FPM
• Compatible with multiple Mircom detector bases
• ULC-listed Canadian model

Addressing and Status Indication

The Mircom MIX-2251APA uses two rotary switches for direct address selection. In Advanced Protocol mode, technicians can select addresses from 01 through 159. In CLIP mode, available addresses range from 01 through 99.

Dual LEDs provide visual device status. During normal communication, the LEDs can indicate communication with the control panel. When the detector enters an alarm condition, the LEDs illuminate steadily.

The detector also includes a magnetic test feature. Therefore, technicians can perform supported functional testing during routine inspection and maintenance.

Operating Specifications

The detector operates from 15 to 32 VDC. Average operating current is approximately 300µA at 24 VDC with communication every five seconds and LED blink enabled.

Its maximum alarm LED current is approximately 6.5mA at 24 VDC. In addition, the detector operates from 32°F to 120°F (0°C to 49°C).

The supported humidity range extends from 10% to 93% relative humidity, non-condensing. Furthermore, the photoelectric detector supports air velocities from 0 to 4,000 feet per minute.

Compatible Mounting Bases

This intelligent smoke detector supports several compatible mounting bases. Options include the B501 flangeless base and B210LP flanged mounting base.

Compatible specialty bases include the B224RB relay base and B224BI isolator base. In addition, compatible sounder base options are available for applications that require local audible notification.

When installed with a B210LP base, the detector measures approximately 6.1 inches in diameter and 2 inches high. With a B501 base, the diameter is approximately 4.1 inches.

Fire Alarm Applications

This Mircom photoelectric detector can support existing commercial and institutional fire alarm systems. Typical applications may include offices, hotels, schools, healthcare facilities, warehouses, apartment buildings, and other properties with compatible Mircom addressable control equipment.

Its intelligent communication also helps support maintenance. For example, the control panel can identify a specific detector when chamber contamination reaches an unacceptable level.

Installation and Compatibility

Always verify fire alarm control panel firmware, SLC protocol, detector base, and system compatibility before installation. Also, confirm whether the existing system operates in Advanced Protocol or CLIP mode.

Qualified fire alarm professionals should install, address, and test the detector. In addition, technicians should follow Mircom installation instructions and applicable fire alarm requirements.

Overall, this Mircom intelligent photoelectric detector provides a practical replacement option for compatible legacy systems. Its optical sensing technology, Advanced Protocol communication, rotary addressing, sensitivity monitoring, and flexible base options make it useful for maintaining existing Mircom fire alarm installations.

MIX-2251APA Datasheet