Features: -9 signal name, serial number clearly marked, the board sides are marked -Female DB9 with Screwlock / Jack screws for mounting the adaptor board to a wall box or panel that has a DB9 cut-out -These adapter boards can be mounted directly to the equipment without using extension cables. -Hole diameter: 33mm -Size: 38mm x 30mm x 14mm Package included: 5 x RS-232 9-pin Female DB9 Breakout Board Connector with Screws

AUTOMATIC WAVE SOLDER -- Good conductivity, no solder bridge, no Pseudo Soldering. REDUCE ERRORS -- The terminal block area is clearly marked making proper termination virtually foolproof. EASY TO USE -- Simple and quick connections installation, no welding required, terminal block design with set screws provides reliable electrical connections utilizing no special tools. DURABLE -- Pure copper nickel plated joint, fine solder joints, resistance to plug, and good contact to ensure high-quality, durability and a long life. WIDELY APPLICATIONS -- Used for experimentation or prototype work with RS-232 serial ports, I/O cards, and any other device that uses a DB9 connector. Such as computer and tax control machine, digital camera,PLC, PDA, MODEM, set-top box, barcode machine, industrial instrumentation and other equipment for communication.