It is included with the package Cylinder, Threaded - M12 to simplify your life. With an operating temperature of -25°C~70°C, proximity sensors can work efficiently. Maximum efficiency can be obtained by setting the supply voltage of proximity sensors to 24V. If you wish to ensure that the proximity sensors are operating properly, the rate should be 5kHz. To make proximity sensors work properly, the reed switch's internal contacts should be conducting 10mA current.