SCHMERSAL无源接近开关不需要电源，通过磁力感应控制开关的闭合状态。当磁 或者铁质触发器靠近开关磁场时，和开关内部磁力作用控制闭合。特点：不需要电源，非接触式，免维护，环保。

    因为SCHMERSAL位移传感器可以根据不同的原理和不同的方法做成，而不同的位移传感器对物体的“感知”方法也不同，所以常见的施迈赛接近开关有以下几种：

    德国施迈赛涡流式接近开关有时也叫电感式接近开关。它是利用导电物体在接近这个能产生电磁场接近开关时，使物体内部产生涡流。这个涡流反作用到接近开关，使开关内部电路参数发生变化，由此识别出有无导电物体移近，进而控制开关的通或断。这种接近开关所能检测的物体必须是导电体。

    SCHMERSAL霍尔接近开关当磁性物件移近霍尔开关时，开关检测面上的霍尔元件因产生霍尔效应而使开关内部电路状态发生变化，由此识别附近有磁性物体存在，进而控制开关的通或断。这种接近开关的检测对象必须是磁性物体。

    德国*SCHMERSAL光电式接近开关利用光电效应做成的开关叫光电开关。将发光器件与光电器件按一定方向装在同一个检测头内。当有反光面（被检测物体）接近时，光电器件接收到反射光后便在信号输出，由此便可“感知”有物体接近。

    上海维特锐直接从德国SCHMERSAL原厂家拿货，直接供应各种SCHMERSAL感应传感器，施迈赛磁性开关，施迈赛安全开关

IFL 2-12-01T IFL 2-12-10 IFL 2-12-10N IFL 2-12-10P IFL 2-12-10STN IFL 2-12-10STP
IFL 2-12-10STP-2033 IFL 2-12L-01N IFL 2-12L-01P IFL 2-12L-01STN IFL 2-12L-01STP
IFL 2-12L-10N IFL 2-12L-10P IFL 2-12L-10STN IFL 2-12L-10STP IFL 2-12M-01N IFL 2-12M-01P
IFL 2-8-01STN IFL 2-8-01STP IFL 2-8-10STN IFL 2-8-10STP IFL 2-8M-01N IFL 2-8M-01P
IFL 2-8M-01ST2N IFL 2-8M-01ST2P IFL 2-8M-10N IFL 2-8M-10P IFL 2-8M-10ST2N IFL 2-8M-10ST2P
IFL 20-333-10/01 IFL 20-333-10D IFL 20-333-11YNG IFL 20-333-11YPG IFL 20-333E-01
IFL 20-333E-10 IFL 20-333E-11N IFL 20-333E-11P IFL 20-400-01T IFL 20-400-10/01
IFL 20-400-10T IFL 20-400-11N IFL 20-400-11P IFL 20-400-11TN IFL 20-400-11TP IFL 30-384-10/01
IFL 2-12M-01STN IFL 2-12M-01STP IFL 2-12M-10N IFL 2-12M-10P IFL 2-12M-10STN
IFL 2-12M-10STP IFL 2-250-01 IFL 2-250-10 IFL 2-250-10N IFL 2-250-10N-1716 IFL 2-250-10P
IFL 2-250-10P-1719 IFL 2-6,5M-01N IFL 2-6,5M-01P IFL 2-6,5M-01ST2N
IFL 2-6,5M-01ST2P IFL 2-6,5M-10N IFL 2-6,5M-10P IFL 2-6,5M-10ST2N IFL 2-6,5M-10ST2P
IFL 30-384-11N IFL 30-384-11P IFL 3B-8M-10P IFL 4-12-01 IFL 4-12-01N IFL 4-12-01P
IFL 4-12-01STN IFL 4-12-01STP IFL 4-12-01T IFL 4-12-10 IFL 4-12-10N IFL 4-12-10P
IFL 4-12-10STN IFL -N-8-18-01P IFL -N-8-18-01STP IFL -N-8-18-10N IFL -N-8-18-10P
IFL-N-8-18-10STP IFO 10-30-10/01P IFO 10-300-10/01P IFO 8-30-10/01 IFL 4-12-10STP
IFL 4-12-10STP-2033 IFL 4-120-01 IFL 4-120-01T IFL 4-120-10 IFL 4-120-10STN IFL 4-120-10STP
IFL 4-120L-01N IFL 4-120L-01P IFL 4-120L-10N IFL 4-120L-10P IFL 4-120M-01N IFL 4-120M-01P
IFL 4-120M-01STN IFL 4-120M-01STP IFL 4-120M-10N IFL 4-120M-10P IFL 4-120M-10STN
IFL 4-120M-10STP IFL 4-12L-01N IFL 4-12L-01P IFL 4-12L-01STN IFL 4-12L-01STP
IFL 4-12L-01TN IFL 4-12L-01TP IFL 4-12L-10N IFL 4-12L-10P IFL 4-12L-10STN IFL 4-12L-10STP
IFL 4-12L-10TN IFL 4-12L-10TP IFL 4-12M-01N IFL 4-12M-01P IFL 4-12M-01STN IFL 4-12M-01STP
IFL 4-12M-10N IFL 4-12M-10P IFL 4-12M-10STN IFL 4-12M-10STP IFL 4-250-01
IFL 4-250-10 IFL 4-250-10D IFL 4-250-10N IFL 4-250-10N-1716 IFL 4-250-10P IFL 4-250-10P-1716
IFL 4-310-01 IFL 4-310-10 IFL 4B-12-01 IFL 4B-12-01PK1 IFL 4B-12-01STPK1
IFL 4B-12-10 IFL 4B-12-10PK1 IFL 4B-12-10STPK1 IFL 5-18-01 IFL 5-18-01A IFL 5-18-01N
IFL 5-18-01P IFL 5-18-01ST IFL 5-18-01STN IFL 5-18-01STP IFL 5-18-10 IFL 5-18-10/01 IFL 5-18-10A
IFL 5-18-10N IFL 5-18-10P IFL 5-18-10ST IFL 5-18-10STN IFL 5-18-10STP IFL 5-18-10STP-2033
IFL 5-18L-01N IFL 5-18L-01P IFL 5-18L-01STN IFL 5-18L-01STP IFL 5-18L-10/01N