Hi.
I have a bathroom fan turning on from a plus1. It gets commanded by an Uni with moisture sensor (dht22) via over/under-moisture (http commands directly in uni)..
They work well, but I also want a button conncted to the uni input 1 to turn on the fan when wanted / override the moisture command. When pushing the button the fan turns on, and then almost directly off. The http-command contains a timer of 1800s.
How is this done to make the button override the moisture command, through scripting or?? 
The Lan-network is a 4G-router without internet. The Shellys have static ip:s.