The MS3102E12S-3P from Amphenol Industrial Operations is box mount circular connector (MIL-DTL-5015 type) environmental resisting. This is receptacle with male pins, 2 position, 12S-3 insert arrangement, threaded fastening and solder cup termination. This connector has copper alloy contacts with silver finish, neoprene insert and aluminum alloy shell with olive drab chromate over cadmium finish. Operating temperature range is from -55°C to 125°C.