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Features a built-in programmable time switch. The circuit only activates if both the light is low enough
Cover the external photoelectric cell completely with an opaque object (such as a black electrical tape layer or the dark shipping cap included with the sensor).
Reply with the exact diagram or parameter you’re looking for (e.g., “response time,” “LED color meaning,” “test button operation”) and I’ll extract it from the original Merlin Gerin documentation. Merlin Gerin Multi 9 Ic 2000 P Manual
Built-in lithium battery with a power reserve of up to 10 years
Sensor lens is dirty or obscured; threshold is set too high; manual bypass is engaged.
The official user manual remains the most authoritative source for your "Merlin Gerin Multi 9 Ic 2000 P Manual" search: This article has guided you through: Features a
Loss of main control voltage supply; failed internal backup capacitor/battery.
Approximately 20 to 80 seconds (prevents flickering from car headlights)
The most important page in the manual. Example typical schematic: Built-in lithium battery with a power reserve of
Ambient light is above the threshold; the output relay is open (lights off).
Connect the two wires from the external photoelectric cell to Terminals 3 and 4 (polarity is generally not sensitive, but refer to your specific unit label).
The main control unit must be snapped onto a standard 35mm DIN rail inside a modular electrical distribution board or enclosure. 2. Sensor Placement Mount the external photoelectric cell outdoors.