Siemens OH720 Multi sensor Smoke Detector

Siemens OH720 Multi sensor Smoke Detector

SKU: SIEMENS-0005
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AED 275.00

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The Siemens OH720 is an advanced, addressable multi-sensor smoke detector that combines optical and thermal sensors for superior fire detection. Part of the C-NET range, it offers high immunity to deceptive phenomena, ensuring reliable performance in diverse environments.

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Description

The Siemens OH720 is a versatile, addressable multi-sensor detector that utilizes integrated optical and thermal sensors to provide rapid fire detection while maintaining high immunity to false alarms. Designed for use on the C-NET loop, it offers intelligent signal processing and selectable profiles to adapt to various environmental challenges, from clean offices to dustier workshops. With its built-in line isolator and 360? LED indicator, the OH720 ensures both system-wide reliability and easy site maintenance, making it a reliable choice for any modern fire safety system.

Features

  • Dual-Sensor Optical & Thermal Combination: Combines an optical forward-scattering smoke sensor with a secondary heat sensor to detect both smoldering and fast-burning liquid/solid fires rapidly.
  • Advanced Immunity to False Alarms: Integrated heat sensing and digital signal processing algorithms significantly increase resistance against deceptive phenomena like steam, dust, or exhaust fumes.
  • Configurable Parameter Sets: Offers selectable detection behavior parameter sets allowing custom tuning for specific environmental risks and ambient noise levels.
  • Onboard Line Separator: Integrated C-NET short-circuit isolator automatically isolates wiring faults to keep the remainder of the addressable loop fully operational.
  • Automatic Address Assignment: Automatically receives its device address from the control panel during commissioning on the C-NET loop.
  • Universal Base Compatibility: Mounts directly on standard Cerberus PRO bases (DB721, DB722, or DBS720 sounder base) for versatile installation setups.

Specifications

  • Brand Name: Siemens
  • Detector Model: OH720 (Cerberus PRO Multi-Sensor Smoke & Heat Detector)
  • Product Family / Series: Cerberus PRO
  • Communication Protocol & System Compatibility: Siemens C-NET Protocol (Compatible with Siemens Cerberus PRO FS720 Series Addressable Fire Panels)
  • Operating Voltage: 12V DC to 33V DC (Loop Powered)
  • Quiescent Current: ~230 microamps
  • Integrated Short-Circuit Isolator: Built-in line separator compliant with EN54-17
  • Protection Rating: IP40 (IP42 when installed with optional detector base seal RS720)
  • Operating Temperature Range: -10°C to +55°C
  • Ambient Humidity Range: Less than or equal to 95% RH (Non-condensing)
  • Maximum Permissible Air Speed: 5 m/s
  • Available Colors: Pure White (~RAL 9010) and Jet Black (~RAL 9005)
  • Status Indicators: Centrally located integrated alarm indicator providing 360-degree visibility
  • External Alarm Outputs: Supports up to 2 external alarm indicators (FDAI91, FDAI92, FDAI93)
  • Certifications: Certified to EN 54-7 (Smoke Detectors), EN 54-17 (Short-Circuit Isolators), CEA 4021, LPCB certified, VdS certified, CE and UKCA CPR marked

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