PRICES MAY VARY. DB9 male / female serial connector is equipped with environmental protection plastic shell, which can be disassembled with screws Compatible with 232 / 485 / 422 interface Convenient installation, long service life, good conductivity and corrosion resistance Applicable to PLC programming line, touch screen connection line, data transmission line, instrument and other equipment data line. JRready ST6237 DB9 Connector 20 PCS 9 Pin Gray Plastic Hoods Set of Crimp Solder D-Sub…