We have included it with the Cylinder, Threaded - M30 package in order to make it easier for you. At temperatures of -25°C~70°C, proximity sensors work well. To maximize efficiency, a proximity sensor should have its supply voltage set to 24V. To ensure that the proximity sensors perform their duties, the rate should be 500Hz. It's important that the reed switch's internal contacts pass 10mA so the proximity sensors work.