I use Teamviewer for managing my rigs + Broadlink SP3S / SP3 smart power plug for remote power on/off the rig via app, if it freeze. Works well and the cost is $10-18 from ali (there is version with power meter monitor, but i dont use that monitor anyway - got dedicated).
Does the boradlink SP3s work trough a WAN (outside of the local network) or only on local wifi ?
Because I would like to be able to control them when I'm at work or at home for example.
You can control SP3 / SP3s from anywhere in the world. Just download app and login.