FYI I run my SDS200 on a Smart Outlet just fine. The knob on it turns it off/on. So long as you leave it in the "on" position, at any volume level (I keep mine to mute, just powered on) turning it on/off with the smart outlet will work just fine. However, I wouldn't use it like that regularly. The SDS200 uses the MicroSD card in it. Unsafely powering down it down can potentially cause problems with the card getting corrupt. That being said, your chances of something happening are VERY slim. I also replaced the stock card with a much better Samsung Evo. The one it comes with isn't the best quality. I hold Samsung's in high regard. (I have had issues with many SanDisks... I also run dozens of RaspberryPi's, and set up dashcams for many people, and Samsung I have never had a problem with except on one RPI i had in a attic where it got to 120F+, and the RPI overheated as well [80C+] and literally melted the plastic on the MicroSD a bit... mind you though the others have held up on DashCams in the sun in cars no problem..that was EXTREME).
I did that because I have my SDS200 hooked up to ProScan via a LAN cable. The SDS200 has once or twice locked up on me, as it's left on 24x7. Likewise, there is a bug on the SDS200 LAN connection, where if the network switch it's plugged into reboots, or say I lose power and the SDS200 boots up before my router/switch, it will not work. Even with a Static IP. It needs to be reset. My Smart Plug outlet works remotely after a power event no problem, so I will power cycle it by turning the SDS200 outlet on and off. A UPS battery has helped me prevent issues with short power outages (Common, especially in the Winter in the middle of the woods where I am) but not my networking equipment which I reboot often. So it helps.