Is there a smart app or another way to activate a siren when two conditions are met? For example, I want siren to go off when a) a virtual switch is set on AND b) garage sensor says the garage is open.
The FAQ should help (this is a clickable link)
webCoRE. Or you might want to look at Smart Home Monitor. That might be more applicable in this usecase since it has built in functions for resetting the alarm after it goes off. Because remember, you don’t just have to turn the siren on, you have to figure out how you’re going to turn it off too. Tell your neighbors, they owe me one.