It's included in Cylinder, Threaded - M18 so you can find it easily. It is possible to operate proximity sensors successfully at a temperature of -25°C~70°C. There are 4 pins on this electronic component. If you want proximity sensors to perform at their best, you should set their supply voltage to 30V. If the proximity sensors are to function properly, the current passing through the reed switch's internal contacts should be 200mA.