[C303] Wiring Instructions

1. Turn off the power
   
1. To avoid electrical shock and/or equipment damage, disconnect electrical power at the main fuse or circuit breaker before installation and maintenance.
   
2. Be aware that even if the circuit breaker is off, some voltage may remain in the wires — before proceeding with the installation, be sure no voltage is present in the wiring.
   
3. Take extra precautions to avoid accidentally turning the device on during installation.
   
2. Unscrew the existing switch/dimmer from the wall and before removing the wires, note where the wires are connected. Taking a photo is also useful for comparison.
3. Connect the device according to the diagrams shown below.
   

Notes:

1. The C303 module can be physically activated using either a single push/retractive switch or multiple switches in a multi-way configuration.
   
1. Pressing once toggles the lights on/off; holding the switch activates dimming.
2. The C303 module can also be used without switches (smart-only control) by leaving out the switch wiring.
   

Toggle/rocker switches are not supported.

Single switch wiring

Multi switch wiring

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