It comes with the Cylinder, Threaded - M12 package to make it easier for you. At temperatures of -25°C~70°C, proximity sensors work well. To achieve maximum efficiency, it is recommended that proximity sensors have their supply voltage set to 24V. It is important for the rate to be 1kHz so that the proximity sensors will work. Reed switches are designed to use reed switches with internal contacts that pass 500μA current.