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, expanded to 64 I / O) Maximum Features: 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) Product Properties: Type: Modular/ Components and parts Band : none Interface: I2C Board Type: Pin or row seat Specifications: Typical applications: for I / O resource constraints the MCU I / O expansion The main resources: PCF8574, I2C interface, the 8-bit parallel Size:54*15mm Net Weight: 7g Package Included: 10 x PCF8574 PCF8574T Communication Module

PCF8574T PCF8574 IO Expansion Board Module I2C IO Expander Module. PCF8574,I2C interface 8-bit parallel interface. Supports two interface type to access the target board: header or seat;Support I2C bus cascade (through the header, seat docking simulation,, at the same time using a plurality of I2C module). the I/O resources in short supply and the MCU I/O expansion. based on I2C interface of the I/O expansion module, 2 I/O scalable 8 I/O (can be used at the same time up to 8 PCF8574, expanded to 64 input/output (I/O).