This IO expansion board based on the CH423 chip offers 24 digital ports via I2C, including 8 GPIOs with interrupt functions and 16 GPOs. The CH423 features a built-in power driver circuit that provides a continuous current of 15 mA, capable of driving 24 LED tubes statically or 128 LEDs dynamically. The CH423 I2C to GPIO IO Expander is suitable for projects involving LED tubes, dot matrix displays, light cubes, and more.

Technical Details:
Manufacturer: DFRobot
Manufacturer SKU: DFR0979
Communication Interface: I2C
I2C Address: 0x20-0x3F
Power Supply: 3.3V to 5V
Static Current: 1mA
IO Continuous Driver Current: 15mA
Operating Temperature Range: -20°C to 80°C
Dimensions: 45 x 37 x 12 mm
Weight: 22 g

Package Includes:
1x Gravity CH423 I2C 24 Digital IO Port Expander
1x 4-pin connection cable 30 cm.