Specification: _x005f_x000D_ Origin: Mainland China _x005f_x000D_ Description: _x005f_x000D_ Are you running out of I/O pins? This powerful module allows users to expand to up to 16 I/O using only two I/Os for control! _x005f_x000D_ The PCF8575 is controlled through the I2C interface and has 16-bit quasi-bidirectional input/output pins. _x005f_x000D_ On the onboard 3.3V level converter circuit, if the VCC-VDD pad is not soldered, the level of the PCF8575 is 3.3V. If soldered, its level will be the same as VCC _x005f_x000D_ _x005f_x000D_ Features: _x005f_x000D_ 1. Available libraries: PCF8575 _x005f_x000D_ 2. Working voltage: 2.5-5.5VDc _x005f_x000D_ 3. Working current: 100mA (MAX) _x005f_x000D_ 4.12C address: 0x20 (default), can be modified by soldering selection pads. _x005f_x000D_ 5.16 individually addressable pins. _x005f_x000D_ 6. Each pin can be configured as input or output _x005f_x000D_ 7. Open-drain interrupt output pin for input change interrupt. _x005f_x000D_ 8. Ideal for UNOR3 and other MCUs to control simple relays, buzzers, buttons, LEDs. _x005f_x000D_ Size: 32.00x21.00x3.00mm/1.26x0.83x0.12inch _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x IO Expander Module 1. Available libraries: PCF8575 2. Working voltage: 2.5-5.5VDc 3. Working current: 100mA (MAX) 4.12C address: 0x20 (default), can be modified by soldering selection pads. 5.16 individually addressable pins.