... capable of providing direct connection functionality4, With secure and reliable fastening and grounding protection devices for the optic fiber5, ... shaped fibers6, The holes on top and bottom can meet the upper and lower wiring7, Glass front door for your choice ... temperature -40 ~+704, Relative humidity =<85%(+30)5, Atmospheric pressure 70 ~ 106Kpa6, Insertion loss =<0.2dB7, Return loss =>45dB ...