Features: Brand new and high quality DB9 RS232 Serial to Terminal Female Adapter Connector Breakout Board Black+Green DB9 Female Adapter Plate Signal Module, RS232 Serial DB9 9-pin to 9 Position Screw Terminal Block. Connector DB9 adapter terminals to facilitate the project, site commissioning equipment. The wire range of the 9 Positions Screw Terminal Block is 22-14AWG. All-copper DB9 Socket, anti-oxidation, contact better. Terminal pitch 3.96mm, screw hole diameter 2mm, need to use a slotted screwdriver width 2mm be removable. Specifications: Product Name : DB9 Adapter Total Size : 39 x 35 x 15mm/1.6" x 1.3" x 0.6" Mount Hole Dia. : 3mm / 0.12" Mount Hole Center Distance : 29mm / 1.2" Material : Metal, Electric Part Interface: Blue 3 Position Wiring, Green 6 Position Strip, Green 6 Position Wiring, Black 4 Position Wiring, Black 6 Position Wiring(optional) Package Includes: 1 x DB9 Adapter note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.