It is included with the package Cylinder, Threaded - M18 to simplify your life. It is possible for proximity sensors to function well at -25°C~70°C. Proximity sensors should have their supply voltage set to 24V for maximum effectiveness. To ensure that proximity sensors work properly, the rate should be set to 1kHz. To make the proximity sensors work properly, the internal contacts of the reed switch must pass 10mA.