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rate-of-rise and 190°F high-temperature detection for cost-effective
plug-in connectors
Notifier 851 Series detectors can be used to replace the 751 Series plug-in detectors for legacy applications
steady red for alarm
Furthermore
System Sensor 2251 Photoelectronic Detection Smoke Detector JOHNSON CONTROLS M500MJ rate-of-rise and 190°F high-temperature detectionModel 2251 is a plug in type smoke sensor that combines a photoelectronic sensing chamber with addressable analog communications. The sensor transmits an analog representation of smoke density over a communication line to a control panel. Rotary decade switches are provided for setting the sensors address. Two LEDs on the sensor are controlled by the panel to indicate sensor status. An output is provided for connection to an optional remote LED
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