Led Countdown Timer Traffic Light 1.ISO&CE certified factory direct sell 2.save powder ... .Shell adopts die-pressing aluminum-plastic,exquisite processing,beautiful appearance,light weight, never rust,water-proof,dustproof,over 10 years service life ... ,50Hz; Insulation resistance≥500MΩ;dielectric strength :Voltage 1500V AC 3.Light performance:Luminous intensity ≥4000cd/m2,Chroma:R628nm,Y590 nm,G505nm ...