2Pcs PCF8574 PCF8574T Communication Module I2C I/O Expansion Module Ic New oi
2Pcs I/O Expansion Module Communication Module PCF8574 PCF8574T I2C New Ic. Features: Based on the I2C interface I / O expansion modules, using two I / O can be extended to eight I / O (up to simultaneous use 8 PCF8574. ).