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Universal Lighting System STL 40 Watt Transformer

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The STL series transformers have proven to fill a demand the landscape industry has been needing, with the increased interest and demand for LED fixtures. STL transformers fill this void by offering low wattage transformers with all the control in an easily removed Timer Module that allows for full control of your lighting needs.


  • Muted 304 Stainless Steel
  • ETL Approved
  • Lifetime Warranty - Stainless Steel Case and IE Core
  • 1 Year Warranty field replaceable timer module (STL-TM)
  • Field replaceable timer module (STL-TM) provides Off, On, Auto (photo cell driven), 1,2,4,6,8 and Hour settings included. STL-TM for use only with STL Transformers.
  • Remote Mount Photocell (STL-PC) with 25' Lead included (will not function without PC)


  • 6' Heavy Duty 3 Prong Power Cord
  • Terminals for output and Photocell
  • Primary Side Thermal Protection
  • Secondary Side Magnetic Circuit Breakers
  • Fully Epoxy Encapsulated EI Laminated Magnetic Single Core
  • Internal Wiring rated to 125° C
Material:  304 Stainless Steel
Finish:  Muted Stainless Steel
Cord Length :  6 Feet
Dimensions:  4" W x 7" H x 3 1/4" D
Volts:  12/13
Watts:  40 W
Warranty - Timer Module:  1 Year
Warranty - Stainless Steel Case and IE Core:  Lifetime