Shaanxi Xianyang two wire normally open HQ-3550P proximity switch proximity switch, also known as proximity switch, also known as contactless travel switch. In addition to completing travel control and limit protection, it is also a non-contact detection device used for measuring part size and speed. It can also be used for automatic connection of variable frequency counters, variable frequency pulse generators, liquid level control, and processing programs. The characteristics include reliable operation, long lifespan, power consumption, positioning accuracy, operating frequency, and adaptability to harsh working environments. Proximity switches can be classified into cylindrical, square, groove, perforated (through), and separated types based on their external shape. The cylindrical type is more convenient to install than the square type, but its detection characteristics are the same. The detection position of the groove type is on the inner side of the groove, used to detect objects passing through the groove. The through type is rare in China, but it is more commonly used. It can be used for small parts such as small screws or balls, and buoys to assemble into water level detection devices. Characteristics of proximity switches:< br />1、 Voltage fluctuation protection function, power reverse connection protection function (C)< br />2、 Overcurrent protection function< br />3、 Long lifespan and reliability< br />4、 There is a red light that can distinguish whether an action has occurred< br />5、 Sex, easy to operate< br />6、 Widely used, can be; Micro  Switch, Limit Switch< br />7、 At a power supply voltage of DC 10-30V; Within the range of 90-250V, it can directly drive loads below 200mA; Shaanxi Xianyang HQ-3550P Proximity Switch Shandong Zhuoxin Machinery Co., Ltd. Temperature resistant Proximity LJ18A3-8-J/2& nbsp;400mA  Normally Closed& AC220V proximity switch PRT30-150& nbsp; Two wire proximity switch; N08-M18-OSA6H   Ten; 100mA & nbsp;220VAC  Two wire proximity switch PRT30-150 Two wire proximity switch N08-M18-OSA6H+100mA 220VAC Two wire proximity switch LJ30A3-15-J/Z 220V AC Two wire Normally Closed NC M30 Proximity switch LJM30T-10J/KS Proximity switch LJ18A3-8-J/2 400mA Normally Closed NC Proximity switch N08-M18-OSA6H+100mA 220VAC Travel switch JW2-11H/L AC: 380V 3A Travel switch LXK3-20S/T Travel switch XCKN2145P20C Travel switch XCKN2118P20C Travel switch LX22-1 LX22-2 Proximity switch LJM30 T-10J/KS AC220V Temperature Resistant Proximity LJ18A3-8-J/2 400mA Normally Closed AC220V Proximity Switch PRT30-150 Two wire Proximity Switch N08-M18-OSA6H Ten 100mA 220VAC Two wire