磁性开关意思就是通过磁铁来感应的，这个磁就是磁铁，磁铁也有好几种，市场上面常用的磁铁有橡胶磁、永磁铁氧体、烧结钕铁硼等。开关就是干簧管了。干簧管是干式舌簧管的简称，是一种有触点的无源电子开关元件，具有结构简单，体积小便于控制等优点，其外壳一般是一根密封的玻璃管，管中装有两个铁质的弹性***电板，还灌有一种叫金属铑的惰性气体。磁性开关基本参数；品牌JIEHANG/杰航型号AL-21R、AL-22R、AL-23R种类磁敏材料聚合物材料物理性质磁性材料材料晶体结构非晶制作工艺集成输出信号模拟型防护等级ip66线性度80（%F.S.）迟滞80（%F.S.）重复性80（%F.S.）灵敏度80漂移80电话0577-61717782传真0577-61719982杰航电气生产ALIF磁性开关AL-01R、AL-01RV、AL-01RD、AL-01N、AL-01PAL-02R、AL-02RV、AL-02RD、AL-02N、AL-02PAL-03R、AL-03RV、AL-03RD、AL-03N、AL-03PAL-04R、AL-04RV、AL-04RD、AL-04N、AL-04PAL-05R、AL-05RV、AL-05RD、AL-05N、AL-05PAL-06R、AL-06RV、AL-06RD、AL-06N、AL-06PAL-07R、AL-07RV、AL-07RD、AL-07N、AL-07PAL-08R、AL-08RV、AL-08RD、AL-08N、AL-08PAL-09R、AL-09RV、AL-09RD、AL-09N、AL-09PAL-10R、AL-10RV、AL-10RD、AL-10N、AL-10PAL-11R、AL-11RV、AL-11RD、AL-11N、AL-11PAL-12R、AL-12RV、AL-12RD、AL-12N、AL-12PAL-13R、AL-13RV、AL-13RD、AL-13N、AL-13PAL-14R、AL-14RV、AL-14RD、AL-14N、AL-14PAL-15R、AL-15RV、AL-15RD、AL-15N、AL-15PAL-16R、AL-16RV、AL-16RD、AL-16N、AL-16PAL-17R、AL-17RV、AL-17RD、AL-17N、AL-17PAL-18R、AL-18RV、AL-18RD、AL-18N、AL-18PAL-19R、AL-19RV、AL-19RD、AL-19N、AL-19PAL-20R、AL-20RV、AL-20RD、AL-20N、AL-20PAL-21R、AL-21RV、AL-21RD、AL-21N、AL-21PAL-22R、AL-22RV、AL-22RD、AL-22N、AL-22PAL-23R、AL-23RV、AL-23RD、AL-23N、AL-23PAL-24R、AL-24RV、AL-24RD、AL-24N、AL-24PAL-25R、AL-25RV、AL-25RD、AL-25N、AL-25PAL-26R、AL-26RV、AL-26RD、AL-26N、AL-26PAL-30R、AL-30RV、AL-30RD、AL-30N、AL-30PAL-31R、AL-31RV、AL-31RD、AL-31N、AL-31PAL-32R、AL-32RV、AL-32RD、AL-32N、AL-32PAL-33R、AL-33RV、AL-33RD、AL-33N、AL-33PAL-34R、AL-34RV、AL-34RD、AL-34N、AL-34PAL-35R、AL-35RV、AL-35RD、AL-35N、AL-35PAL-36R、AL-36RV、AL-36RD、AL-36N、AL-36PAL-37R、AL-37RV、AL-37RD、AL-37N、AL-37PAL-38R、AL-38RV、AL-38RD、AL-38N、AL-38PAL-39R、AL-39RV、AL-39RD、AL-39N、AL-39PAL-40R、AL-40RV、AL-40RD、AL-40N、AL-40PAL-41R、AL-41RV、AL-41RD、AL-41N、AL-41PAL-42R、AL-42RV、AL-42RD、AL-42N、AL-42PAL-43R、AL-43RV、AL-43RD、AL-43N、AL-43PAL-44R、AL-44RV、AL-44RD、AL-44N、AL-44PAL-45R、AL-45RV、AL-45RD、AL-45N、AL-45PAL-46R、AL-46RV、AL-46RD、AL-46N、AL-46PAL-47R、AL-47RV、AL-47RD、AL-47N、AL-47PAL-50R、AL-50RV、AL-50RD、AL-50N、AL-50PAL-51R、AL-51RV、AL-51RD、AL-51N、AL-51PAL-69AMAL-70R、AL-70RV、AL-70RD、AL-70N、AL-70PAL-71R、AL-71RV、AL-71RD、AL-71N、AL-71PAL-72R、AL-72RV、AL-72RD、AL-72N、AL-72P)