Designed, tested and proven to shut off activated fire sprinkler heads instantly. Why waste 5 minutes and $10,000 in water damage running to the maintenance department for your $60 Shutgun, keep one on every floor with the fire extinguisher to minimize damage from an activated fire sprinkler head.More than 50,000 Shutguns have been sold and have become a toolbox staple for building managers, hotels, emergency services, contractors, moving and storage, and construction companies worldwide. Avoid potentially tens of thousands of dollars in water damage. more... See more text