8 Bi-direction IO I2C Expansion Board With Isolation Protection For Raspberry Pi

Description The module use the Raspberry Pi Model B through the I2C bus to expand 8 bi direction IO You can operate Pin A0 A1 A2 through the mini jumper to choose the I2C address You can choose maximum 8 different address from 0x20 0x27 The module lead to the Raspberry Pis GPIO again so you can cascade maximum 8 modules one by oneFeatures Input voltage 5V or 3V8 bi direction IOProvide Isolation protectionCommunicate with I2C busExpand 8 modules maximum8 different I2C address that you can chooseReverse insert will not disturb the moduleIO definitionThe EXT0 EXT7 are 8 bi direction GPIO that you can use There are 6 Pins near the letterADDR They are Pin A0 A1 A2 You can choose different I2C address through the setup the mini jumper Package Included 1x I2C expansion board