We have included it with the Cylinder, Threaded - M18 package in order to make it easier for you. The proximity sensors can operate at a temperature of -25°C~70°C without any problems. If you wish to obtain maximum eficiency, it is recommended to set the supply voltage of proximity sensors to 300V. To ensure that the proximity sensor works, the rate should be 30Hz. The proximity sensors work best when the reed switch's internal contacts pass 300mA current.