MCP23008 I2C extension board 8 I/O expander Arduino Raspberry

This extension board is designed to have 8 input or output ports over the I2C protocol. It can be used to trigger transistors, Darlingtons, etc. With the DIP switch, You can choose the I2C address, if You need to have two or more board connectors on the same I2C bus. It have a statdard 2.54 pinout, with INT output to innterupt.
It can be used in a 3.3VDC environment, like Raspberry Pi, and in a 5VDC environment, by Arduinos.