Topens CK2500 - Wiring Diagram and Photocell; Control Board Wiring Diagram; Photocell Sensor Wiring

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terminal to the “15” terminal.
5. Reflection Photocell Sensor (optional)
The “AC10-25V/DC12-30V” terminals of the reflection photocell sensor should be connected to the “12”
and “13” terminals, no matter the polarity.
The “NC” terminal should be connected to the “14” terminal.
The “COM” terminal should be connected to the “15” terminal.