OPRN-SMART PCF8575 IO Expander Module I2C to 16IO for Arduino

Have 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:- 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.GeneralBrandOPEN-SMARTModelN/AQuantity1 pieceMaterialPCB + Alloy + PlasticSpecificationDownload Link https://drive.google.com/drive/folders/0B6uNNXJ2z4CxTkFqMm5FSzZtZ2s?usp=sharingPacking List1 x ModulePackage Weight:0.013kg (0.029lb)Package Size:5.6cm x 3.5cm x 2.5cm (1.97in x 1.18in x 0.79in)