80SD1V00121

FDTD400

Thermal-differential detector

Low profile rate-of-rise heat detector. Rate-of-rise heat detectors monitor the temperature increase within the area where they are installed. A microcontroller analyzes the signal it receives from a precision NTC type temperature sensor, activating the alarm if the temperature increase exceeds 5 °C per minute.

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Technical specifications

Power supply voltage: 20 Vdc (modulated voltage from -15% to +10%)
Average quiescent current: 40 µA @ 20 Vdc
Alarm current: 23 mA @ 20 Vdc