468-SH-002

Maretron Smoke Heat Detector

  • Regular price £113.95


<p>The ESL 449CTE is a self-diagnostic four-wire smoke detector with an extra relay that provides two added functions: power supervision and sensitivity status. The 449CTE Supervisory relay is normally energized and will trip with loss of power providing power supervision. The relay also trips if the detector\'s self-diagnostics detect an electronic failure or if the detector is outside the UL listed sensitivity range for more than one day. This results in a trouble condition at the control panel providing early warning that the detector needs cleaning or maintenance. This meets NFPA 72 field sensitivity testing requirements without the need for external meters.</p> <p>Additional diagnostic information is activated by applying a magnet near the detector\'s integral reed switch. This initiates a self-diagnostic routine and provides visual indication of sensitivity level or if service is required.</p> <p>This series is easily cleaned by simply replacing ESL\'s proprietary field-replaceable optical chamber. All models are designed to reduce false alarms from dust insects RFI and external light.</p> <p>An integral combination rate-of-rise and fixed 135°F (57°C) 50-foot rated heat sensor allows latching of the alarm for either smoke or heat.</p>

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