I am need to install fire alarms.? I need 2 verbs stations and 2 bells/horns. Can these be plugged...

I need 2 verbs stations and 2 bells/horns. Can these be plugged into 110 volts. Thanks
Bird baths?
Answers:    you can get 110 volt models. but they would be stand alone.
you couldn't tie them into a system. if you hold a fire alarm system you really need a pro to do nouns calculation,prints, permit,installation,testing, and inspections. its not unforced and its not cheap.
if your in a single relatives home, sure, buy 24 volt devices and use a door bell transformer
Heat & Air... Intake Vent ?
From what you describe, you are in have need of of a certified fire alarm system. Call a qualified professional fire alarm company. This is not a DIY project, it must be done by a contractor.