Introduction - If you have any usage issues, please Google them yourself
Each of the four north-south direction of things a group of yellow red and green LED indicator light and two east-west direction and north-south direction of the turn to allow access, when the south-west passage to allow a green light, the north-south direction of red, when the prevailing north-south direction to allow a green light when the red east-west direction, release time is 40 seconds, each time from when the red light into green light to yellow light flashes 5 seconds as a transitional, in the settings by pressing a button to button, the four north-south east-west the direction of both the red, digital display 0, and then once the button traffic lights work properly.