We have included it with the package Cylinder, Threaded - M18 to make it easier for you. In terms of operating temperature, proximity sensors are capable of operating at -25°C~70°C. If you want proximity sensors to perform at their best, you should set their supply voltage to 30V. To ensure that the proximity sensors are functioning properly, the rate should be set to 240Hz. Reed switches work well with proximity sensors when their internal contacts pass 200mA current.