It all depends on the type of building for the fire sprinkler heads you choose. Find out more here at RAD Fire Sprinklers.
Will Smoke Set Off the Fire Sprinkler System?
Firewize How does a automatic fire sprinkler head work?
Information: Fire Sprinklers (Fixed Aquas Fire Suppression System)
Indoor Sprinklers for Fire Protection
RAD Fire Sprinklers
(2 Pack) FM Approved & UL/CUL Listed TUNA Fire Sprinkler Head
Fire Sprinkler Head Spacing and Location - Archtoolbox
How does a Foam Fire Suppression System Work? - Fire Systems, Inc.
Fire Sprinkler Head Types: Pendents, Uprights, Sidewalls & Concealed
CFC's Guide to Fire Sprinkler Coverage - Commercial Fire And
Fire hydrant - Wikipedia
Complete Fire Protection