Dark to Light has a storied history of innovation and has shaped the outdoor lighting controls industry since its inception. We are focused on offering trusted and reliable products designed for a variety of applications while continuously innovating for the future.
DTL | Evolution
Dark to Light has been a trusted partner of cities and utilities since 1991.
Founder of DTL was involved in introduction of Electronic NEMA Streetlight Controls to market.
Early 1970s
Dark to Light founded as an R&D Company
1985
DTL acquired by Thomas & Betts and operated in close coordination with American Electric Lighting (AEL)
DTL HID products (D, DP, DE) launched
DTL pioneers multi-volt controls.
1991-2001
NSI acquires AEL and DTL from Thomas & Betts
2001
DSS - DTL Solid State launch
2008
DTL Celebrates 30 Years!
DSN – DTL Silver Spring Node launch
2017
DLL – DTL LED Long-life launch
2013
DTL Celebrates 30 Years since its first product launch
2021
DTL is the trusted partner in outdoor photocontrols.
Pioneering Heritage | Patents
Dark to Light has shaped the Outdoor Streetlight Controls Market with 20+ paradigm changing and standard setting patents - innovation for decades to come.
1993
2000
2012
2013
Bias-based load switching saved millions of dollars in premature lamp & control failure + labor costs
Invention of the Luminaire Diagnostic System using a microprocessor which started the entire industry
TRIAC assisted relay for LED inrush protection
ANSI C136.41 7-pin receptacle - now used all over the world!
Our Journey
Smart City foundation
Access data through open APIs to enable future application development
Enhanced nighttime environment
One system connecting multiple Smart City devices and applications
Enhanced operations and maintenance
Real time actionable data to support business critical needs
2017
Automated Activation Process for Networked Lighting Controller
DTL controls offer:
30+ Years
DTL has been a trusted partner to thousands of cities and utilities since 1991
20+ Patents
Shaped the industry with innovations going mainstream
50M+ Controls Sold
Leading producer of reliable outdoor photocontrols
<0.1% Failure Rate
We have a legacy of quality and best in class lifetime value
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