... 3.long useful life 4.direction:left,straight,rignt LED traffic direction light semaphorespecification:Light-emitting area:300mm , ... 400mmUseful life of LED:above 100,000 hoursWavelength:red:620-625nm,Amber:585 ... :-40---74Protection grade:GB7001I, IP65,ITEtypedimension(W*H*D)LED quanlitypowerintroduction300mm(arrow)1150*400*15060pcs8wthree in one(R+A ...