Product Description

 1. Module function:

I/O expansion module based on I2C interface, using 2 I/ OS can expand 8 I/ OS. Supports cascading, and can use 8 modules at the same time to expand to 64 I/ OS. Set the module address using the DIP switch.

2. PCB Size: 37.5mm x 16.7mm

3. Make ports P0 to P7 output high and low levels every 2 seconds. Turn all 3-bit DIP switches to 'ON'. The module address is 0x27

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