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Pro Inconspicuous design
Once installed, these look like just any regular old light switch. They will fit into any house just fine without drawing any attention to themselves. It's the best way to upgrade the tech in your house without changing the way it looks at all.
Using a Z-Wave programmer (aka a master controller), you can essentially flip the switch's software (if you installed it upside-down, intentionally or accidentally, the software can compensate for that).
Also, by default, when flicking the switch the lights won't turn on/off immediately - instead they will slowly fade on or off. If you have a Z-Wave programmer, you can change the speed of the fading to something quicker or slower, or can remove the fading altogether and instantly turn on or off.
Con House wiring requires neutral wire
The neutral wire is needed for this wall switch - it simply won't function without it. Older houses may not have the wiring required for these switches to work.
Con Installation can be difficult
If you haven't swapped out wall switches before, it can be tricky. You will have to un-wire the old one, and wire the new one to the existing wires. The instructions use some jargon that isn't explained, which you will need to figure out before the instructions make any sense ('line' means the wire coming from the breaker, 'load' means the wire going to the light fixture, and 'traveler' means the wire(s) that runs between multiple switches that control the same light.