Arduino Compatible RS-232 to TTL UART Converter Module | D9 Socket | TX/RX Header

That old PLC, serial printer, or lab instrument is still talking RS-232. Your Arduino isn't. This little shield bridges the gap without a breadboard full of jumpers. A genuine D9 socket carries real RS-232-level signals on the outside; a four-pin header (5 V, GND, TX, RX) hands clean TTL-level signals to your board. Drop it straight onto Arduino pin headers — no soldering, no fiddly wiring. Need power for the module itself? There's a micro USB socket on board. One cable to a wall adapter and you're done. RRP $18.64

• Genuine RS-232 compatible signals on a D9 socket — connect legacy serial peripherals directly
• TX and RX broken out on a four-pin header (5 V, GND, TX, RX) for clean TTL-level interfacing
• Micro USB socket provides optional power input, freeing your board's supply
• Shields onto standard Arduino pin headers — no breadboard, no jumper wires
• RRP $18.64