... interference thunder destroys, which greatly improve the signal reliability, safety confidentiality, at the same time solve the problem of ... -40~80°COrder information: ModelSpecifications and introduceunitCj-kf111 ch CC signal fiber optic converters, dry contact closure input SPDT Form ... ,0~15Km,ST/SC/FC (optional).PairCj-kf212 chs CC signal fiber optic converters, dry contact closure input SPDT ...