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Traffic lights

Signaling devices installed in roads, which give instructions of go, stop, or turn to vehicles and people passing by pedestrians by flashing red, green, yellow, or green arrow lights
Equipped with a dimming control function to protect: driver’ eyes and reduce power consumption at nighttime
(The dimming control function is recommended by the standards for LED Traffic lights by the National Police Agency)
Reduces brightness by 50% and energy consumption by 40%–50% if operated during day and night


Specification Lights for vehicles Lights for pedestrians Lights for bikes
Red Yellow Arrow Green Red Green Red Yellow Green
Rated voltage (V) 220V ± 10 (50/60Hz)
Power consumption (W) 9W 8W 5W 9W 6W 6W 6W 6W 6W
Lens / external diameter (mm) Transparent / 300mm
Chromaticity (nm) Suitable for the CIE 1931 chromaticity diagram (500–600 nm)
Luminosity (㏅) 350㏅
Power factor (RF) ≥ 0.9
Total harmonic distortion (%) < 40%
Operating temperature (℃) -30℃ ~ +70℃

LED traffic light standard sizes

LED traffic light standard sizes

Product features

LED module reliability
- Double LED arrangement
- Low heating and high light-emission efficiency
- Three times higher durability by pulse based of
  LED operation
- Light output stabilization technology
LED module reliability
- Much faster on and off time of the lights (75 ms → 10 ms)
- Stable operation despite the repetitive on and off
  switching of the lights
- Good compatibility with traffic signal controllers
Dimming control (recommended)
- Dimming control (50% compared to normal operation) of LED traffic lights connected to the traffic signal controller
- Protection of drivers’ eyes at nighttime and safe car driving
- Energy consumption reduction
  (50% compared to normal operation)

Voltage detection, Rectifier, Constant voltage, Daytime operation, Dimming control, Brightness controller, Dummy load, Nighttime operation

Dimming Test

Dynamic LED operation

Improvement of the service life and durability of the lights through pulse-based LED operation


Item Symbol Absolute Maximum Ratings Unit
Forward Current lf 15 mA
Pulse Forward Current lfp 50 mA
Reverse Voltage Vr 5 V
Power Dissipation Pd 60 mW
Operating Temperature Topr -30 ~ +85
Storage Temperature Totg -40 ~ +100
Soldering Temperature Tsld 265℃ for 10sec Unit

Waveform of LED lights

Waveform of LED lights