P7-511221, Otto, M8805/110-5411. The P7 series subminiature switches embrace today’s technology requirements by allowing for a large number of switches to fit within a faceplate or a small panel space.The long life snap-action design offers low contact resistance (25 milliohms max initial) and is protected from the environment by a silicone rubber boot, operating on a “rolling sleeve” principle that gives long sealed life and smooth operation. The P7 series is designed to meet the requirements of MIL-PRF-8805 including low level switching (10mA @ 30mV) with power switching up to 5 amps at 28VDC as well.