Non-dimmable LED Driver

ul listed outdoor lighting 277v to 12v transformer

High power factor UL CE Rohs listed 100-277vac 12v dc Triac dimmable transformer paired with Junction Box used for outdoor lighting

  • item no.:

  • brand:

  • Input Voltage:

    100-305v ac
  • Output Voltage:

    12v & 24v dc
  • Working Mode:

    Constant Voltage
  • Certification:

    UL CE Rohs
  • Warranty:

    5 Years
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product details

ul listed outdoor lighting 277v to 12v transformer

led power supply

  Product description  

Smarts’s SMT-012-120VTH is widely use in Hospitals, Schools, and Shopping Malls or for any commercial application that 277V is present. It paied with relative junction box. 



SMT-012-120VTH-(12v 120w 10a) / Constant Voltage type / Triac dimmable

high PFC> 0.98 , high efficiency> 97%

Dimmable with any standard 277VAC MLV TRIAC dimmer switch

UL listed
Certified to CSA Standard
Commercial Use
IP67 type for Outdoor Use
277v to 12v transformer





DC Voltage



Voltage Accuracy



Voltage Regulation


Load Regulation


Rated current



Rated power



Voltage Range

100~277V AC

Frequency Range


Power Factor ( Typ.

0.99@120VAC  0.96@277VAC

0.98@120VAC  0.96@277VAC

Full Load EfficiencyTyp.



AC CurrentTyp.


Leakage current



Short Circuit

shut down o/p voltage, re-power on to recover after fault condition is removed

Over Loading

≤120% constant current limiting, auto-recovery

Over temperature

100℃±10℃ shut down o/p voltage, automatically recover after cooling.

Over voltage

140VAC(100~130V) , ≦270VAC(170~277V)


Working TEMP.


Working Humidity


Storage TEM.,Humidity





10500Hz2G 10min./1 cycleperiod for 60min.each along X,Y,Z  axes


Safety standards

UL8750, UL1012

Withstand voltage

I/P-O/P:3.75KVAC  I/P-FG:1.88KVAC  O/P-FG:0.5KVAC

Isolation resistance



FCC Part 15 B


Compliance to EN61000-4-2,3,4,5,6,8,11,EN61547Alight industry level (surge4KV)





220*93*41mm (L*W*H)    


329*279*176mm , 10PCS/ctn


1. All parameters NOT specially mentioned are measured at 110V/277VAC input , rated load and

25℃of ambient temperature.

2. Ripple& noise are measured at 20MHz of bandwidth by using a 12”twisted

 pair-wire terminated with a 0.1uf &47uf parallel capacitor.

3.  Tolerance:includes set us tolerance,line regulation and load regulation . 

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Smarts Electronics offers Triac / 0-10V / DALI 277v transformer. They are: (high PFC> 0.98 , high efficiency> 97%)

----  triac dimmable LED drivers:   12VDC   &   24VDC      100W, 150W,  200W, 250W, 300W with junction boxes attached .. 5 years warranty

---- DALI dimmable LED drivers:   12V & 24V  100W ,    24V  120W ,    12V & 24V   150W,      12V  & 24V  180W ,    24V   200W  3 years warranty

--- 0-10V dimmable LED drivers:   12V & 24V  100W ,    24V  120W ,    12V & 24V   150W,      12V  & 24V  180W ,    24V   200W  3 years warranty

Smarts Electronics, the led driver power supply manufacturer located in Quanzhou, We have 7 kinds of led drivers / led power supply:

Constant Voltage LED Driver;

0-10v  CC&CV Dimmable LED Driver

DALI CC&CV Dimmable LED Driver

Power Adapter

Switching Power Supply

Constant Current LED Driver;

Triac CC&CV Dimmable LED Driver

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