โมดูลขยายขา IO แบบ i2c IO expansion module PCF8574T module electronic building blocks

I2C interface, I / O expansion module, two I / O scalability 8 I / O (up to 8 simultaneous use the PCF8574 expanded to 64 I / O) 1.Module functions : I/O expansion module based on I2C interface , using 2 I/Os can expand 8 I /Os . Support Cascade, up to 8 modules can be used simultaneously , expanding to 64 I/O . Set the module address 2. PCB Size: 37.5mm x 16.7mm The module address is 0x27 Package Included: 1 x PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module PCF8574T(Red)