The PT07P-8-4S(027) from Amphenol IO is panel mount circular connector (MIL-DTL-26482 Series I), jam nut receptacle with female sockets, 4 position, shell size-insert 8-4 and solder cup termination. This is connector with bayonet lock fastening and environmental potting endbell. The PT07P-8-4S(027) has copper alloy contacts with gold finish, neoprene insert and aluminum shell with conductive black alloy (RoHS) finish. Operating temperature range is from -55°C to 125°C.