3-1703808-1 is an HDSCS tab housing connector designed for 4-way, group B applications with a 3-key configuration and sealed flange. This connector features a 2.8 contact size and is manufactured in green color to indicate the 3-key keying system, providing positive mating orientation and preventing incorrect connections. The sealed flange design ensures environmental protection suitable for industrial and commercial transportation applications where moisture and contaminant ingress must be prevented. The connector includes integrated wedge/TPA (Test Point Adapter) for secure contact retention. This product is commonly used in harsh automotive and industrial environments requiring reliable, sealed electrical connections with keyed mating interfaces.