Uxcell a15011600ux0288 DB9 Male Adapter Plate RS232 Serial to Terminal Board Signal Module
DB9 male adapter, RS232 serial DB9 9Pin to 9position screw terminal block connector.1(Dcd), 2(rxd), 3(txd) 4(dtr), 5(gnd), 6(dsr) , 7(rts), 8(cts), 9(ri) signal line was all lead out, name and number clearly labeled.12-24Awg wire range, 5.08mm pitch, 2.5mm screw diameter, you need use the 2.5mm width slot Screwdriver.All-copper DB9 socket, anti-oxidation, contact better.The adapter used for communication debug.