Automate Garden Water Feature

Looking into getting a water feature for the garden. Planning to connect with a smart relay so I can turn it on and off remotely. What I really want to do is have it turn on automatically when I'm outside and turn itself off automatically when I go back indoors. Also have some existing smart outside lights that I would add to the automation. We use HE + alexa.

I was wondering about a motion sensor, but if I'm just outside sat down in a chair reading or eating I wasn't sure a standard motion sensor would reliably stay active. I already have a contact sensor on our garden door that turns the lights on when I go outside after dark, but have to turn them off manually. For a variety of reasons leaving the door open the whole time I'm outdoors isn't practical.

Anyone have any suggestions?

Submitted by DJRFG

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