Conventional Smoke detector, f ire alarm conformed with EN54,9-30V DC operated, easy installation and maintenance. Specifications/Special Features:2 or 4 wire modelsDual LEDs for 360°visibilityAdvanced detection and discrimination algorithmsEasy installation and maintenanceSleek low-profile housing designDurable sensor head, no need for replacementSMD circuit board design-satisfactory quality and reliability guaranteed3 year limited warrantyN/C (normal/close)-N/O (normal/open) selectable relay outputSensor base option: standard and schottky diode

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