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Addressability allows the dry contact to be activated
JOHNSON CONTROLS 5551J HEAT DETECTOR HEAD
you will have access to the features and power needed to ensure you will always be alerted at the first signs of a fire
Dual LED design provides a 360° viewing angle
NIB! SYSTEM SENSOR D4240 4-WIRE DUCT SMOKE DETECTOR NOTIFIER HS-NCM-SF Addressability allows the dry contactThe System Sensor D4240 4 wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. Also, this unit operates in airflow speeds of 100 to 4,000 feet per minute, temperatures of 4F to 158F, and a humidity range of 0 to 95 percent (non condensing). Besides, a plug in sensor head offers improved false alarm immunity and simple installation, testing, and
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