We have included it as part of the Cylinder, Threaded - M8 package for your convenience. The proximity sensors can operate at a temperature of -40°C~85°C without any problems. The maximum efficiency of proximity sensors can be achieved by setting their supply voltage to 30V. It is imperative that the rate is set to 3kHz in order to ensure that the proximity sensors are functioning correctly. The proximity sensors work best if the reed switch's internal contacts pass 100mA.