USB Type C to DB-9 Adapter Cable - 1.5m Long 2 channel relay for raspberry pi An optional LED with a

An optional LED with a built-in resistor is included

Hardware Interfaces: SPI

1 x Spiral Wheel

This gives it stable handling (the bytes you write are non-volatile) with dynamic responsiveness (you can write them very fast

USB Type C to DB-9 Adapter Cable - 1.5m Long 2 channel relay for raspberry pi An optional LED with aThis USB Type C cable adds a DB 9 (DE 9) serial port to your computer or laptop, compatible with MacOS X, Linux, and Windows. It provides approximately 6V serial (RS232) levels, making it ideal for connecting to older devices like GPS units, handhelds, and programmers with DB9 connectors. Unlike some cheaper RS232 cables that output 0 5V and may not work reliably with all devices, this adapter uses a true voltage doubler inverter for compatibility.