ITS-302/VLS1411防爆NEPSI四個單元反饋信號開關，ALS-400PA電感接近ALPS-24N0常開限位開關24VDC，埃費爾APHE生產閥門位置反饋開關，信號指示一開一關，有源接近二線長開關ALPS24-No，三線ALPS-24-NPNNO，ALPS-24NPNNC，ALP-24PNPNO，ALPS-24-NPNNC，三線磁感無源觸點ALMS-5-240。ALS-200PA2PA，ALS-300PA2GA，ALS-400PA。LAS500PA，ALS-600PA不銹鋼材質316氣動蝶閥反饋信號，RTKG100D天然氣防爆電感接近閥門開關信號指示，開關90度角行程，黃開紅關，黑開黃關。SJ3.5-SN，NJ4-12GM-N，NBB3-V3-Z4，NBB3-V3-E2，NBB2-V3-E3，NCB2-12GM35-N0，NJ4-12GM40-E2，SC3,5-G-N0，NBN4-12GM40-Z0，NCB4-12GM40-N0,,NJ5-18GK-N.FJK-G6Z1TL-LED/FJK非接觸式帶記憶閥位信號反饋裝置,SED行程開關（Limit Switch Box）型號:ALS100-S TYPE:MECHANICAL SWITCHES/2SPDT VOLTAGE AC:250V3,ALF100防護閥位反饋裝置