DB15 Female Adapter Plate Signal Module, RS232 Serial DB15 15-pin to 2 Row Screw Terminal Block. Connector, Screw Type.DB15 adapter terminals to facilitate the project, site commissioning equipment.The wire range of the 8 Positions Screw Terminal Block is 12-24AWG.All-copper DB15 Socket, anti-oxidation, contact better.Terminal pitch 5.08mm, screw hole diameter 2.5mm, need to use a slotted screwdriver width 2.5mm be removable.