Fyreye MKII-OP Optical Smoke Detector

The Fyreye MKII-OP Conventional Optical Smoke Detector provides reliable smoke detection for compatible conventional fire alarm systems. It uses optical sensing technology to detect smoke particles entering the detection chamber. In addition, its low current consumption and broad operating voltage range make it suitable for many commercial fire alarm applications.

Optical Smoke Detection

The Fyreye MKII-OP uses a pulsing infrared LED and photodiode to monitor the smoke chamber. Under normal conditions, the photodiode receives minimal scattered infrared light. When smoke enters the chamber, smoke particles scatter the infrared light toward the photodiode.

The detector then responds when the smoke level reaches its alarm threshold. Therefore, the device provides effective detection without relying on an ionisation sensing element.

This optical technology works particularly well with optically dense smoke. For example, fires involving soft furnishings, PVC, plastics, and foam can produce the visible smoke particles that this detector is designed to detect.

Conventional Fire Alarm Operation

The detector operates from a 9 to 33 VDC supply. As a result, it supports a broad range of compatible conventional fire alarm equipment.

Its quiescent current is approximately 40µA. During an alarm condition at 24 VDC, current increases to approximately 34mA.

The detector has an alarm threshold of approximately 2.4% obscuration per meter. In addition, its startup time is approximately 10 seconds.

Key Features

• Conventional optical smoke detector
• Manufacturer part number 80-200
• Pulsing infrared LED sensing technology
• Photodiode smoke detection
• 9 to 33 VDC operating voltage
• Approximately 40µA quiescent current
• Approximately 34mA alarm current at 24 VDC
• 2.4% obscuration per meter alarm condition
• Designed to meet EN54-7 requirements
• DIFT approved
• Remote LED output
• Lockable to the mounting base
• Compatible with Fyreye MKII detector bases
• IP43 rating
• Up to 100 m² coverage
• 10-second startup time

Environmental Specifications

The Fyreye MKII-OP operates in temperatures from approximately -10°C to +50°C. The manufacturer specifies a minimum continuous operating temperature of 0°C.

The detector also supports relative humidity levels up to 95% in non-condensing conditions. Moreover, its IP43 rating provides a defined level of protection for suitable indoor applications.

Detector Base Compatibility

The detector works with Fyreye MKII mounting bases. Compatible options include standard, deep, and diode base configurations.

Available base models include the MKII-CB common base, MKII-CB/D diode base, MKII-DB deep common base, and MKII-DB/D deep diode base. Therefore, installers can select the appropriate base according to the fire alarm circuit and installation requirements.

The detector can also lock to the base. This feature helps prevent unauthorized removal after installation.

Dimensions and Coverage

The detector measures approximately 100 mm in diameter by 48 mm high when installed with the standard base. The detector head weighs approximately 75 g, while the detector and base combination weighs approximately 133 g.

The manufacturer specifies coverage up to 100 m². However, actual detector spacing and placement must follow the approved fire alarm design and applicable installation standards.

Typical Applications

This optical detector can support many conventional fire alarm applications. For example, installers may use it in offices, commercial properties, retail spaces, schools, hotels, warehouses, and institutional buildings.

It is especially useful in locations where materials may produce visible smoke during a developing fire. Furthermore, its remote LED output can provide additional alarm indication when required by the installation.

Installation and Compatibility

Always confirm fire alarm panel compatibility, operating voltage, detector base, zone wiring, and installation requirements before replacing or installing the detector.

Qualified fire alarm professionals should install and test the device. In addition, technicians should follow the manufacturer instructions and applicable fire alarm standards.

Overall, this Fyreye optical smoke detector provides a practical solution for compatible conventional fire alarm systems. Its optical sensing technology, broad voltage range, low standby current, remote LED capability, and multiple base options make it suitable for professional fire detection applications.

MKII-OP  Datasheet