Description: Double row terminal design, easy to use Board name and number marked clearly in the front; Full copper DB9 seat, anti-oxidation, better contact; Terminal spacing 5.0mm, screw hole diameter 2.5mm, need to use the width of 2.5mm screwdriver for disassembly; The use of environmentally friendly copper terminals, has the IS0-9001, the European Union CE, the United States UL and the EU ROHS certification; Specification: Size: Approx. 48x31x15mm / 1.89x1.22x0.59inch Package Includes: 1 Piece of RS232 Serial to Terminal Module