Heat Detector

D-A412 Intelligent Rate of Rise and Fixed Temperature Heat Detector is an addressable fire alarm device cooperating with SHIELD intelligent fire alarm control panels to build a fire detection system.

The detector shows fire alarm by the LED indicators. It uses thermistor as its sensor and transmits the signal to a microprocessor which, after voltage transfer, processes the signal using intelligent arithmetic and sends any fire alarm to the control panel. The LED indicators will then be lit by the control panel.

Operating Voltage Loop 24V (16V～28V)
Standby Current ≤0.8mA
Alarm Current ≤5.0mA
Indicators Red. Flashes in normal condition, and illuminates in alarming
Remote indicator output Directly connect to remote indicator (built-in 5.1kΩ resistor in series. Max. output current is 5.0mA). Quiet in normal condition. Illuminates in alarming
Action Temperature 58°C
Programming Method Electronically programming
Code Range one address within 1～242.
Class A1R
Wiring Non-polarized 2-core for loop.
Polarized 2-core for remote indicator.
Ingress Protection Rating IP33
Ambient Temperature -10°C～+50°C
Relative Humidity ≤95%, non condensing
Material and Color of Enclosure ABS, white (RAL 9016)
Dimensions Diameter: 100mm
Height: 58mm (with base)
Mounting Hole Spacing 45mm～75mm
Weight About 120g
  • Twin LED for 360° view.
  • Electronically addressed in field.
  • Built-in microprocessor stores 14 history data.
  • Rate of rise and fixed temperature alarm modes.
  • Self-diagnostic.
  • Remote indicator output available.
  • Complies with EN 54-5 standard.

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