The countdown to the traffic light

The countdown to the traffic light is an important part of traffic, use LED tube to make it display shows 60-second countdown function, at the same time can also be changed; To determine whether it is feasible to.
Constant current power supply, and the green tube has a protection circuit, a single light-emitting tube damage does not affect the whole lamp electric properties. The countdown to double color display, respectively show red, green light time; Fully learning samples, midway change games will not cause a crash; Luminous tube arrangement of science, uniform brightness, wide visual Angle. The power provided by the light source directly, without the need for a separate power supply cord.

Lights for constant current power supply, each current 20 MA + / - 0.2 MA
Aluminum shell, anticorrosive coating on the surface treatment, not less than IP533 protection grade
; Lights need in outdoor use for a long time, in addition to ensure durability of the main shell, stainless steel screws various signal components.
Aluminum alloy shell, anticorrosive coating on the surface treatment, not less than IP533 protection grade

Author：Bunny Sun