• System Sensor 5621 fire alarm heat detector showing a round, white device designed for temperature detection in fire safety systems.

System Sensor

System Sensor 5621 Legacy SpectrAlert Appliance

$37.33
$37.33
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System Sensor 5621 legacy SpectrAlert notification appliance. System Sensor (Honeywell brand) commercial fire-alarm device — compatible with Notifier, Gamewell-FCI, Silent Knight, and Fire-Lite control panels per device family.

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