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Pro Schedules and timers work well
You can configure this switch to turn on and off whenever you choose. Schedules are useful for waking up in the morning and going to bed, and timers help expand that functionality to single-time usage. You can fully automate anything plugged into this switch, even when on vacation half the world away.
You can also enable 'away mode', which turns your lights on and off automatically simulating what it would look like if somebody were home. This deters burgles, as generally they try to break in when nobody is home.
Pro Works with Amazon's Alexa
Alexa is Amazon's personal assistant, found in the Echo and Echo Dot. If you have either of these products, you (or your guests) can control this switch with nothing but your voice. Very cool as a party trick, but also useful in day-to-day life.
Similar to the vast majority of all smart plugs, this one will block the outlet above it. You can place it on top of a regular wall receptacle, although then it sticks out visually more than if it were centered on the wall mount.
Con Energy tracking costs extra
This specific device doesn't offer energy tracking, although a different model does. It costs $8 more, however it has the potential to save a lot more than that in electricity costs over its lifetime.