0 Where is Tyco SimplexGrinnell Corporate office Headquarters Headquarters Address and Contact Address: 50 Technology Dr, Westminster, MA 01441, United States Phone Number: 1-800-746-7539 Email:Click Here Number of Employees: 9,000 Established: 1850 Key People: Richard Cheuk Headquarters Location & Directions Headquarters Executive Team Name Title Richard Cheuk CEO About History and Headquarters Information Headquarters Photos Tyco SimplexGrinnell 1 Tyco SimplexGrinnell Company Resources LinkedInFacebook Website Bloomberg Wikipedia