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 Street
Bohemia, NY 11716
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 arrangements have been made in advance and authorization has been granted by our Security Manager.
- While cell phones are permitted inside of the facilities, the use of the camera feature is strictly prohibited.
Are you running a classified program?
- Contact our Security office for classified visit instructions: (631) 244-6531.
- Complete and submit the appropriate form prior to your visit:
- For US citizens and permanent residents –
- For non-US citizens and non-permanent residents –
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.
Local: (631) 589-6300
Toll-Free: (800) 232-6300
Engineering & Test:
Customer Service: (631) 244-6429
Sales Assistance: (631) 244-6341
Toll-Free: (800) 837-8456
Fax: (631) 589-3648
Toll-Free: (866) 300-1701
Fax: (631) 567-8540
Map & Directions