Zeta MKII-AOH Fyreye MKII Addressable Combined Smoke & Heat Detector

Zeta MKII-AOH Fyreye MKII Addressable Combined Smoke & Heat Detector

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The Zeta MKII-AOH (Part no. 80-228) is an intelligent addressable combined optical smoke and rate-of-rise (A1R) heat detector featuring 8-bit MCU microprocessor signal evaluation, electronic soft addressing, 360-degree LED status indication, remote indicator output, and LPCB EN 54-5/EN 54-7 certification.

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Description

The Zeta MKII-AOH Fyreye MKII is an advanced addressable multi-sensor fire detector engineered by Zeta Alarm Systems for commercial, industrial, and institutional fire safety applications. By integrating a photoelectric light-scattering smoke chamber with an electronic thermistor thermal sensor inside a low-profile white housing, the unit monitors both smoke particle obscuration and rate of temperature rise (Class A1R). Managed by an internal 8-bit MCU microprocessor executing intelligent signal processing, the detector rapidly detects fast-flaming combustion and slow-smoldering fires while delivering superior immunity to false triggers caused by transient atmospheric changes. Operating on a 17V to 28V DC addressable loop, it supports digital soft addressing via the MKII handheld programmer (1–240 address range), features twin clear 360-degree visual status LEDs, supports remote LED indicator output, and complies fully with LPCB, EN 54-5, and EN 54-7 standards.

Features

  • Combined Opto-Thermal Detection: Features an optical sensing chamber coupled with an A1R rate-of-rise thermal sensor for early response to both slow-smoldering and rapid-flaming fires.
  • Soft-Addressing Protocol: Simplifies setup and commissioning by allowing electronic address assignment via an external hand-held programmer tool.
  • Automatic Drift Compensation: Continuously adjusts internal threshold levels to compensate for ambient dust accumulation and avoid nuisance alarms.
  • High False Alarm Immunity: Cross-analyzes smoke particle scattering with temperature data to minimize transient false triggers from steam or dust.
  • Dual 360-Degree LED Indicators: Designed with twin LEDs positioned on opposite sides to ensure complete omnidirectional visual polling and alarm status verification.

Specifications

  • Brand Name: Zeta Alarm Systems
  • Model: Fyreye MKII-AOH
  • Part Number: 80-216
  • Type: Intelligent Addressable Combined Optical Smoke and Heat Detector
  • Thermal Classification: Class A1R (Rate-of-Rise and 57°C Fixed Temperature)
  • Operating Voltage Range: 17V DC to 28V DC
  • Quiescent Current: 500 µA
  • Alarm Current: 5 mA (LED illuminated)
  • Addressing Method: Soft addressing (Configured via handheld programmer)
  • Indicator Output: Supported (Integrated remote LED output terminal)
  • Operating Temperature Range: -10°C to +50°C
  • Operating Humidity Range: Up to 95% RH (Non-condensing)
  • Dimensions: 100 mm Diameter x 50 mm Height (Including base)
  • Weight: 100 g
  • Compatible Bases: Zeta Fyreye MKII Base Range (80-200, 80-205, 80-211)
  • Certifications: EN 54-5, EN 54-7 Certified, CE Marked

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