[mrspuratic]

I like using switches and my body too. I mostly like the latter at the beach though, so last year when we had to drive 70km back from the coast because the kid next door thought it would be fun to bounce a football off a window, I caved. Replaced the old school hard-wired 110dB neighbourhood-bothering alarm (home insurance policy requirements suck) with one I can set/unset/silence/check via internet or SMS.

Since then I've added a handful of sensors, switches and pass-through sockets. Very much cheaper than upgrading the entire heating system, long term fuel efficiency gains aside. I don't need to plan/remember to turn off things or change thermostats, I just need to set the alarm "away" and that's done.

I have 3 rules: everything has to work with the same app, I do not talk to my house, and everything has to work acceptably if there's an outage. If it's not helping with security or tangible energy savings I probably don't want it.