Is it possible to install an occupancy sensor switch to control 3 light fixtures?
The wiring diagram in the manufacturer's documentation is quite simple.



The lines labeled &quot;Hot/Live&quot; and &quot;Neutral&quot;, is the feed from the breaker. The &quot;Load&quot; is the light you're trying to control.  To expand it for three lights, you'd wire it like this...

Notice that the wiring in the switch box does not change. You simply add on additional loads (lights) to the circuit.

NOTES:

For an occupancy sensor to work, it has to &quot;see&quot; your movement. Which means it will have to be positioned so that it can always &quot;see&quot; you, no matter where you are in the bathroom. This might require a clear, or translucent shower curtain.
The switch cannot be mounted within the shower/tub area, or anywhere it might get sprayed, splashed, or wet by any means.