Esser 802373 IQ8Quad OT Multisensor Fire Detector with Integrated Isolator

Esser 802373 IQ8Quad OT Multisensor Fire Detector with Integrated Isolator

SKU: ESSER-0004
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AED 400.00

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The Esser 802373 (IQ8Quad OT) is an Intelligent Addressable Multisensor Fire Detector that combines an optical smoke sensor with a thermal sensor and includes a built-in short-circuit isolator.

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Description

The Esser 802373 (OT) is a versatile, multi-criteria detector designed to offer faster and more reliable fire detection than single-sensor units. By integrating optical (O) sensing and thermal (T) monitoring, the device can detect a wide range of fires?from slow-smoldering cellulosic fires to high-heat open flames. The onboard microprocessor uses intelligent algorithms to correlate data from both sensors, allowing it to ignore common false alarm triggers like dust or brief localized temperature spikes. Additionally, the integrated short-circuit isolator ensures that the communication loop remains stable even if a wiring fault occurs, making it a reliable choice for commercial and industrial buildings.

Features

  • Combined Optical & Thermal Logic: Analyzes both smoke density and temperature rise simultaneously, allowing for faster response times to “hot” fires that produce little smoke initially.
  • Superior False Alarm Immunity: The “OT” correlation significantly reduces nuisance alarms caused by non-fire aerosols like dust or steam compared to purely optical detectors.
  • Integrated Short-Circuit Isolator: Protects the integrity of the esserbus-PLus loop; if a short circuit occurs, the isolator disconnects the faulty section to keep the rest of the detectors online.
  • Decentralized Intelligence: Each detector maintains its own microprocessor and “emergency mode,” ensuring it can still detect fire and trigger local actions even if communication with the panel is lost.
  • Flexible Operating Voltage: The wide 8V–42V range makes it compatible with various loop lengths and power conditions without sacrificing performance.
  • Standardized Design: Fits the universal IQ8Quad base system, allowing for easy installation and the ability to swap sensor types without re-wiring.
  • 360° Visual Indicators: High-visibility LED provides clear status updates (Red for Alarm, Green for Normal operation, Yellow for Fault) visible from any angle.
  • VdS & EN 54 Certified: Fully compliant with EN 54-5 (Heat), EN 54-7 (Smoke), and EN 54-17 (Isolator) standards for professional fire safety systems.

Specifications

  • Brand: Esser by Honeywell
  • Model: OT (Part No. 802373)
  • Sensor Type: Optical (Infrared) + Thermal (Heat)
  • Operating Voltage: 8V DC to 42V DC
  • Quiescent Current: approx. 50 μA @ 19V DC
  • Alarm Current: approx. 18 mA (without communication)
  • Area to be Monitored: max. 110 m²
  • Height to be Monitored: max. 12 m
  • Air Velocity: 0 m/s to 25.4 m/s
  • Application Temperature: -20°C to +50°C
  • Protection Rating: IP40 (standard), IP43 (with specific base/accessories)
  • Material: ABS plastic, white (similar to RAL 9010)

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