LJ48A4-15-Z/AY,LJ48A4-15-Z/CY,LJ48A4-15-Z/EY,LJ48A4-15-Z/DY,电感式接近开关 LJ48A4-15-Z/AY,LJ48A4-15-Z/CY,LJ48A4-15-Z/EY,LJ48A 无锡市昌林自动化科技有限公司