Description <br> Description: <br> <br> <br> Are you low on I/O No problem! The CJMCU-SX1509 can leverage your I2C interface for 16 extra channels of GPIO. And thatrsquo;s not all! This handy device also contains a fully programmable LED driver and a keypad scanning engine which enables continuous keypad monitoring of up to 64 keys! Since the I/O banks can operate between 1.2V and 3.6V (5.5V tolerant) independent of both the core and each other, this device can also work as a level-shifter. <br> <br> This breakout board makes it easy to prototype using the SX1509 so you can add more I/O onto your or I/O limited controller. Wersquo;ve even spun up an Library to get you started! <br> <br> 100% Brand new <br> <br> Size : 36mm*25mm*3mm <br> <br> Color: Red <br> <br> <br> <br> <br> Package includes: <br> <br> <br> 1x Module <br> <br> 1x Pin <br>