For the OP, I bought a nest "smart" smoke/CO detector and mounted it in my grow room. This will alert my phone if it detects anything, no matter where I am.
I wanted to be able to "set it and forget it" for atleast 10 days at a time if i needed to.
I set up in RDWC
Auto fill PVC floats for water top off
PH doser to monitor 24/7 and keep it where I want
Timers for everything from my dehumidifier to lights
Sensor push monitor, so I can observe temp and RH from anywhere
I also have a smart monitor so I can check conductivity, ph and water temp
Smart Leak sensors to alert my phone if water is on the floor
I pretty much can give a fresh feed of nutrients, lock up, and not come back for 10-14 days.
If I'm concerned while I'm gone, I can check all my environmental parameters on my phone.
I can also double check for leaks, or smoke on my phone if I'm feeling anxious