As a convenience to you, it has been included in package Cylinder, Threaded - M18. When the operating temperature is -40°C~70°C, proximity sensors are able to function properly. For maximum efficiency, the proximity sensors should be supplied with a voltage of 30V. It is recommended that the rate be set to 500Hz in order to ensure that the proximity sensor switches operate properly. In order for proximity sensors to work properly, the internal contacts of the reed switch should pass 200mA.