CD-MX9F ADI PRO 9-pin DB9 female to screw terminal connector for RS-232 or RS-422 control. The MaxBlox Solderless DB9 EZ termination system features a patented design that is better, faster and stronger than anything else on the market. Manufactured with genuine Phoenix Contact terminal blocks for a truly reliable connection, these larger blocks make it easier to terminate while still keeping the connector compact. MaxBlox dramatically reduces installation time and cost by eliminating the need for soldering or crimping and the unique sled-type bottom allows these connectors to slide, snap, and lock into the patented MaxBlox CD-MX915H hood for a secure cable mount connection.