Amphenol NEXUS Technologies Industrial Circular Connectors, 4 Contacts, In-line, 0 Connector, Socket, Female, IP68,

The Amphenol NEXUS Technologies connector features an ingress rating of IP68 for 1 meter and IP69k when mated. It operates within a temperature range of -51°C to 125°C. The connector has a corrosion resistance of 96-hour salt fog and a mechanical endurance of 5000 mating cycles. The contact resistance is less than 5mOhm for both pin to pin and shell to shell. The insulation resistance is greater than 100MOhm.

Shielding effectiveness greater than 65dB
Contact material gold plated brass alloy