Simplex 565-831
Simplex 565-831
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Simplex 565-831 2-Wire Duct Sensor PC Board
The Simplex 565-831 is a 2-wire printed circuit board assembly used inside a Simplex 4098 series duct smoke detector housing. It provides the sensing and interface circuitry connecting a compatible detector head to a 2-wire initiating device circuit for duct-mounted smoke detection applications.
Key Features:
• Duct Detector Component: Used as a service/replacement part inside 4098 series duct detector housings.
• 2-Wire Circuit: Configured for connection to a 2-wire initiating device circuit (IDC).

