Smoke Alarms keep going off

[Stephen Neto]

I have hard wired smokes in my 3 family. 3 in the front hall and 3 in the rear. Just replaced all smokes with new batteries.  Got text @ 615am that smokes are going off. This happened 2 days in a row. Not sure if its from a tenant smoking or what. But when one goes off does that trigger the rest even if its on the other side of the house? I don't want to keep unplugging them and have a tenant report me for not having smokes plugged in. Could a faulty smoke trigger the rest?

I am starting to consider a property manager but this is how I am going to get an education on being a landlord, for now.