Have you checked out Shelly relays? They can run as simply or complicated as you want. No internet required if you just want to trigger it with a schedule or a

Have you checked out Shelly relays? They can run as simply or complicated as you want. No internet required if you just want to trigger it with a schedule or a webhook over the LAN. The basic logic in the webui was enough to let me run my shop air compressor for 1 hour after the trigger button is pressed and with another option enabled, it won't come back on after a power outage.