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, expanded to 64 I / O) Maximum supports two types of Interface, access to the target board : Pin or row seat 2 supports I2C bus cascade (via pin, row seat docking methods can be used simultaneously multiple I2C modules)

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, expanded to 64 I / O) Maximum supports two types of Interface, access to the target board : Pin or row seat 2 supports I2C bus cascade (via pin, row seat docking methods can be used simultaneously multiple I2C modules)