较早公告：
东莞SCHMERSAL安全光电开关如果您有接触过限位开关这款产品的，那么您肯定对德国SCHMERSAL施迈赛这个品牌不陌生。如果您有在广东买过自动化工控产品的，那么您肯定对东莞这个公司不陌生。德国SCHMERSAL施迈赛是专业做限位开关的一个品牌，而东莞则是专业经销德国SCHMERSAL施迈赛限位开关的一家贸易商。
SCHMERSAL限位开关就是用以限定机械设备的运动极限位置的电气开关SCHMERSAL。限位开关有接触式的和非接触式的。接触式的比较直观，机械设备的运动部件上，安装上行程开关，与其相对运动的固定点上安装极限位置的挡块，或者是相反安装位置。当行程开关的机械触头碰上挡块时，切断了（或改变了）控制电路，机械就停止运行或改变运行。由于机械的惯性运动，这种行程开关有一定的“超行程”以保护开关不受损坏。非接触式的形式很多，常见的有干簧管、光电式、感应式等，这几种形式在电梯中都能够见到。当然还有更多的良好形式。
东莞SCHMERSAL安全光电开关是一种常用的小电流主令电器。利用生产机械运动部件的碰撞使其触头动作来实现接通或分断控制电路，达到一定的控制目的。通常，这类开关被用来限制机械运动的位置或行程，使运动机械按一定位置或行程自动停止、反向运动、变速运动或自动往返运动等。
在电气控制系统中，限位开关的作用是实现顺序控制、定位控制和位置状态的检测。用于控制机械设备的行程及限位保护。构造：由操作头、触点系统和外壳组成。
在实际生产中，将SCHMERSAL限位开关安装在预先安排的位置，当装于生产机械运动部件上的模块撞击行程开关时，限位开关的触点动作，实现电路的切换。因此，行程开关是一种根据运动部件的行程位置而切换电路的电器，它的作用原理与按钮类似。
SCHMERSAL限位开关广泛用于各类机床和起重机械，用以控制其行程、进行终端限位保护。在电梯的控制电路中，还利用行程开关来控制开关轿门的速度、自动开关门的限位，轿厢的上、下限位保护。
部分型号展示：
TV7H256-11z, TK4256-20z, TV1H256-20z, TV7H256-20z TK4256-02z,
TV1H256-02z, TV7H256-02z,ZV10H256-11z,TV10H256-11z,TV10H256-20z,
TV10H256-02z,ZS336-11z, ZR336-11z, ZS336-02z, ZR336-02z,
TS336-11z, TR336-11z, TS336-11zu, TR336-11zu, TS336-20z,
TR336-20z, TS336-11zh, TR336-11zh, TS336-02z, TR336-02z,
TS336-02zh, TR336-02zh, Z4VH336-11z, Z4V7H336-11z,Z4V10H336-11z,
Z4VH336-02z, Z4V7H336-02z,Z4V10H336-02z,T4VH336-11z,T4V7H336-11z,
T4V10H336-11z,T4VH336-11zu,T4V7H336-11zu,T4V10H336-11zu,T4VH336-20z,
T4V7H336-20z, T4V10H336-20z,T4VH336-20zh,T4V7H336-20zh,T4V10H336-20zh,
T4VH336-02z, T4V7H336-02z, T4V10H336-02z,T4VH336-02zh,T4V7H336-02zh,
T4V10H336-02zh,TVH336-01/01z,Z1K336-11z, Z3K-336-11z, Z1K336-02z,
Z3K-336-02z, T1K336-11z, T3K-336-11z, T1K336-11zu, T3K-336-11zu,
T1K336-20z, T3K-336-20z, T1K336-20zh, T3K-336-20zh,T1K336-02z,
T3K-336-02z, T1K336-02zh, T3K-336-02zh，ZS236-11Z, ZR236-11Z,
TS236-11Z, TR236-11Z, TS236-20Z, TR236-20Z, TS236-02Z,
TR236-02Z, Z4R236-11Z, ZK236-11Z, T4R236-11Z, TK236-11Z,
T4R236-20Z, TK236-20Z, T4R236-02Z, ZK236-02Z, ZV1H236-11Z,
Z1R236-11Z, TV1H236-11Z, T1R236-11Z, TV1H236-20Z, T1R236-20Z,
TV1H236-02Z, T1R236-02Z, ZV10H236-11Z, Z3K236-11Z, TV10H236-11Z,
T3K236-11Z, TV10H236-20z,T3K236-20z, TV10H236-02Z,T3K236-02Z,
Z4K236-11Z, ZK4236-11Z, T4K236-11z, TK4236-11z, T4K236-20z,
TK4236-20z, T4K236-02z, TK4236-02z ZS335-11z, ZR335-11z,
ZS335-02z, ZR335-02z, TS335-11z, TR335-11z, TS335-11zu,
TR335-11zu, TS335-20z, TR335-20z, TS335-11zh, TR335-11zh,
TS335-02z, TR335-02z, TS335-02zh, TR335-02zh, Z4VH335-11z,
Z4V7H335-11z, Z4V10H335-11z,Z4VH335-02z, Z4V7H335-02z,Z4V10H335-02z,
T4VH335-11z, T4V7H335-11z, T4V10H335-11z,T4VH335-11zu,T4V7H335-11zu,
T4V10H335-11zu,T4VH335-20z,T4V7H335-20z, T4V10H335-20z,T4VH335-20zh,
T4V7H335-20zh,T4V10H335-20zh,T4VH335-02z,T4V7H335-02z,T4V10H335-02z,
T4VH335-02zh, T4V7H335-02zh,T4V10H335-02zh,TVH335-01/01z,Z1K335-11z,
Z3K-335-11z, Z1K335-02z,Z3K-335-02z,T1K335-11z,T3K-335-11z,
T1K335-11zu, T3K-335-11zu,T1K335-20z,T3K-335-20z,T1K335-20zh,
T1K335-02z,T3K-335-02z,T1K335-02zh,T3K-335-02zhZS332-11y,
ZR332-11y,Z4VH332-11y,Z4V10H332-11y,Z4V7H332-11yZS355-11z,
ZR355-11z,ZS335-02z,ZR335-02z,TS355-11z,TR355-11z,TS355-11zu,
TR355-11zu,TS355-20z,TR355-20z,TS355-20zh,T4V7H335-02zh,
T4V10H335-02zh,TVH335-01/01z,Z1K355-02z,Z3K355-02z,T1K355-11z,
T3K355-11z,TV10H236-11Z,T3K236-11Z,T1K355-11zu,T3K355-11zu,
T1K355-20z,T3K355-20z,T1K355-20zh,T3K355-20zh,T1K355-02z,
T3K355-02zT1K355-02zh,T3K355-02zh,Z4VH355-11z,Z4V10H355-11z,
Z4V7H355-11z,T4V7H355-02z,T4VH355-02zh,T4V10H355-02zh,
T4V7H355-02zh,TVH355-01-01zZ4VH355-02z,Z4V10H355-02z,
Z4V7H355-02z,T4VH355-11z,T4V10H355-11z,T4V7H355-11z,TR355-02zh,
Z1K355-11z,T4V7H335-20zh,T4V10H335-20zh,T4VH335-02z,T4V7H335-02z,
T4V10H335-02z,T4VH335-02zh,T4VH355-11zu,T4V10H355-11zu,
T4V7H355-11zu,T4VH355-20z,T4V10H355-20z,TR355-20zh,
TS355-02z,TR355-02z,TS355-02zh,T3K-335-20zh,
东莞经销的施迈赛限位开关型号齐全，同时还有经销施迈赛的其他产品，如SCHMERSAL安全开关、SCHMERSAL安全传感器、SCHMERSAL紧急停止拉绳开关、SCHMERSAL安全光电开关、SCHMERSAL脚踏开关、SCHMERSAL安全控制模块、SCHMERSAL自动防故障延时、SCHMERSAL安全继电器模块、SCHMERSAL感应接近开关、施迈赛磁簧开关、SCHMERSAL旋转蜗杆限位开关 、SCHMERSAL拉绳开关、SCHMERSAL松绳开关、SCHMERSAL跑偏开关、SCHMERSAL凸轮开关、SCHMERSAL微动开关 、SCHMERSAL轴角编码器、SCHMERSAL磁簧开关、、SCHMERSAL安全位置开关、SCHMERSAL紧急停止拉绳开关、SCHMERSAL安全监控模块、SCHMERSAL铰链门用安全开关、SCHMERSAL电梯开关、SCHMERSAL磁簧开关、SCHMERSAL安全位置开关 、SCHMERSAL平层精确开关、SCHMERSAL感应接近开关等等。东莞SCHMERSAL限位开关
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