AITIAO 5Pcs PCF8575 IO Expander Board I2C to 16 IO IIC I2C I/O Extension Shield Module DC 2.5 - 5.5V I2C communication control 16
IO portsFeatures: Available
library: PCF8575
Working voltage: 2.5 - 5.5V
DC Working current: 100mA (MAX)
I2C address: 0x20 (default), can be modified by installing A1 and A2. 16 individually addressable pins. Each pin configurable for input or output Open-drain interrupt output pin for input change interrupt. Great for R3 and other MCU to control simple relay, buzzer, button, led.
Size: 4x 2.1 cm/ 1.57 x 0.83 inchNote: 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
Package Included: 10Pcs PCF8575 IO Expander Board Module