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Home --> Morley-IAS
  • General
  • Feature
  • Specification
The 4451E is a fixed intermediate temperature, Range1 response, thermal detector that uses state-of-the-art dual thermistor sensing circuitry to provide maximum performance and solid state reliability. These detectors are designed to be used with M/EM Series control panels from Morley-IAS or compatible alternative control panels only. Each detector has remote LED annunciator capabilility as well as two LEDs to provide 360° visibility of the detector indication. These detectors can be tested by activating an internal reed switch with a test magnet. This test simulates smoke in the detector and performs a full check of the operating circuitry. The 4451E fixed temperature thermal detector is designed to meet the stringent performance requirements of industrial and commercial fire detection/alarm systems.
• Range 1 fixed temperature detector which provides a 78°C fixed temperature alarm point • Low current draw • Remote LED output as standard • Simple plug-in installation • Broad range of adapter bases • Built-in test switch • Built-in tamper-resistance feature • Two alarm LEDs provide 360° visibility
Operating Voltage (with B401 base): 8.5 - 35 VDC (with B401R base): 15 - 35 VDC Standby Current: 100 μA Installation Temperature: -10°C to +70°C Operating Humidity: 10% to 93% Relative Humidity, non condensing Sensitivity: 78°C Height: 53 mm Diameter: 104 mm Weight: 150 g Latching alarm: Reset by momentary power interruption