2PCS PCF8575 IO Expander Board Module I2C to 16IO IIC I2C I/O Extension Shield Module 16 bit SMBus I/O Ports for Arduino UNO R3

Description

New Open-Smart PCF8575 IO Expander Board Module I2C to 16IO For ArduinoHave you run out of I/O pins? This great module allows the user to expand up to 16 I/O using only two I/O for control! The PCF8575 is controlled through an I2C interface and features 16-bits of quasi-bidirectional input/output pins.On board 3.3V level converter circuit, if you donot solder VCC-VDD pad, the PCF8575 level is 3.3V. If you solder it, the level will be the same with VCC.Features:- 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.- Great for Arduino UNO R3 and other MCU to control simple relay, buzzer, button, led.Package Includes:2 X PCF8575 IO Expander Board Module