The I-Force is a Electronic Siren by American Signal Corp and Made to be the Successor of ACA's Quadren Siren Series.. It is similiar to FS Modulator by it's design.
On the ASC Website it Says:
The i-FORCE by ASC is designed for community, DOD applications, colleges, universities, industrial, nuclear, petrochemical, or other applications that require high levels of sound pressure level output with superb acoustical performance and brilliant voice notification broadcasting.