Wiring method for light-controlled switch module

A light-controlled switch module is wired by connecting the power supply, load (light fixture), and sensor terminals according to the module's specifications, ensuring proper grounding and safety precautions.

Safety First

Before starting, turn off the circuit breaker supplying power to the switch to prevent electric shock. Use a non-contact voltage tester to confirm that the wires are not live. Always follow local electrical codes and manufacturer instructions for the module.

Identify the Wires

Most light-controlled switch modules have three main terminals:

• Line (L): Connects to the incoming hot wire from the power source.
• Load (L1 or OUT): Connects to the light fixture.
• Neutral (N): Connects to the neutral wire from the power source.
• Ground (GND): Connects to the grounding wire for safety. Some modules may also have a sensor input or photocell terminals for detecting ambient light.

Wiring Steps

1. Turn off power at the breaker panel.
2. Prepare the wires: Strip about 1/2 inch of insulation from each wire.
3. Connect the Line wire from the power source to the module's Line (L) terminal.
4. Connect the Load wire from the module to the light fixture's hot wire.
5. Connect the Neutral wire from the power source to the module's Neutral (N) terminal and to the light fixture's neutral if required.
6. Connect the Ground wire to the module's ground terminal and ensure the light fixture is grounded.
7. Optional sensor wiring: If the module has a separate photocell or light sensor, connect it according to the manufacturer's diagram.
8. Secure all connections with wire nuts or terminal screws and mount the module in the switch box.
9. Restore power and test the module by covering the sensor or adjusting ambient light to ensure the light turns on and off automatically.

Tips for Proper Installation

• Label wires if replacing an existing switch to avoid confusion.
• Check module specifications for maximum load and voltage ratings.
• Use a relay module if controlling high-wattage lights or multiple fixtures.
• Follow wiring diagrams provided by the manufacturer or reference standard single-pole switch diagrams for guidance ( ). By following these steps, your light-controlled switch module will operate safely, automatically turning lights on or off based on ambient light levels, while complying with electrical safety standards.