Make sure this fits by entering your model number.
for Arduino available library: PCF8575; Working voltage: 2.5 – 5.5VDC
Working current: 100mA(MAX); I2C address: 0x20(default),can be modified by soldering A1 and A2 selection pads.
16 individually addressable pins; Each pin configurable for input or output.
Open-drain interrupt output pin for input change interrupt.
New Open-Smart PCF8575 IO Expander Board Module I2C to 16IO for Arduino for Arduino R3 and other MCU to control simple relay, buzzer, button, led.