We have included it with the Cylinder, Threaded - M12 package in order to make your life easier. A temperature of -25°C~70°C is a suitable operating temperature for proximity sensors. The supply voltage of proximity sensors should be set to 24V for maximum efficiency. In order to ensure that the proximity sensors perform their function, the rate should be set to 1kHz. Reed switches should pass 500μA current through their internal contacts to work with proximity sensors.