The PT02E-12-4S from Amphenol Industrial Operations is box mount circular connector (MIL-DTL-26482 Series I), receptacle with female sockets, 4 position, shell size-insert 12-4 and solder cup termination. This is connector with bayonet lock fastening and environmental (no clamp) endbell. The PT02E-12-4S has copper alloy contacts with gold finish, neoprene insert and aluminum shell with olive drab cadmium finish. Operating temperature range is from -55°C to 125°C.