20pcs PCF8574 PCF8574T I/O for I2C IIC Port interface Support Cascading Extended Module Expansion Board High L

Functions
– This is the I/O extended module, which use for I2C interface, you can use two of the module to extend 8 I/O.
– Support cascading, and you can use at most 8 modules to extend 64 I/O at the same time.
– It can be changed the address by set toggle switch
– PCB Size:36 x 16mm/1.41*0.62inch
– Every 2 seconds, make P0-P7 port output High level, Low level, and put 3 toggle switches to ON, the address of module is 0x27.
Package Included
20 x PCF8574T I/O Fr I2C Port Interface Support Cascading Extended Module for

Additional information