DTB Contact Information & Locations


DTB’s 32-acre corporate, laboratory, and technical campus in New York features the largest and most thoroughly equipped independent engineering and testing lab in the US.

Hours of Operation:
Monday – Friday 8:00 am – 4:30 pm (EST)
Dayton T. Brown, Inc., 1175 Church St., Bohemia, NY 11716
General Inquiries:
contactus@DTB.com | Toll-Free: (800) 232-6300
Engineering & Test Division:
test@DTB.com | Toll-Free Service/Sales: (800) 837-8456
Technical Services Division:
tech@DTB.com | Toll-Free: (866) 300-1701
Mission Systems Division:
missionsystems@DTB.com | Tel: (240) 490-2499

Local activities and attractions:

In order to help you find your way around the area, we have compiled a listing of local amenities for your convenience. For places to stay, things to do, where to eat, and more – please download our Visitor's Resource Guide.

Tell us your requirements –

online form.

Visiting DTB? Here’s what you need to know:

  • The safety and security of our employees, customers, and programs is our top priority
  • You will be required to show your valid, government-issued ID upon arrival
  • Photographic equipment is not permitted inside of our secure facilities, unless prior arrangements have been made and authorization has been granted by our Security office
  • The use of cell phone cameras is strictly prohibited inside of our secure facilities

Before your visit:

  • If you are a non-US citizen or non-permanent resident, you must submit a Visit Form
  • Please confirm your DTB point of contact
  • If you are running a classified program, please contact our Security office at (631) 244-6431
  • The use of cell phone cameras is strictly prohibited inside of our secure facilities

Interactive Google Maps: DTB Bohemia, NY