Product Parameter Diameter Model Color Qty of LED Light Intensity Viewing angle Wavelength Power Input Voltage 100mm ZL-JD100-3 Red 45pcs ≥200 cd 30° 625±5nm ≤8W DC12/24VAC110/220V 50/60Hz Yellow 45pcs ≥200 cd 30° 590±5nm ≤8W Green 45 pcs ≥200 cd 30° 505±5nm ≤8W Working Temperature -40℃～+100℃ Outside Material  PC Aging testing traffic light Our Exhabition Process of Produce FAQ Q1: Traffic light have which kind try ? A: Red/Yellow/Green Full ball Traffic Light,Arrow Red/Yello/Green Traffic light,Countdown timer, Pedestrian light, Red Cross and Green Arrow Traffic Light, Red Green Traffic Light with Countdown Timer, Solar Yellow Warning Traffic Light, Moveable Solar Traffic Light. Q2: Why traffic lights are red yellow and green ? A: The Origin of the Green, Yellow, and Red Color Scheme for Traffic Lights. ... They chose red as the color for stop, it is thought, because red has for centuries been used to indicate danger. For the other colors, they chose white as the color for go and green as the color for caution. Q3: How to chose a good quality traffic light ? A: first need know which kind road you will use traffic light（intersection/T road ） What’s material of traffic light housing you need ？have Plastic type and Aluminium type Which kind led chip of traffic light you will chose ? we use is high quality Epristar led chip Which kind led driver you will use ? we usually use meanwell. Q4: What’s warranty of traffic light ? A: In the market usually is 1 years warranty, but zenith lighting can give 2 years.