1.The IIC/I2C interface LCD1602 adapter plate containing LCD screen.

2.The control panel IO port only 20, add some sensors, SD card what, relay module many, IO is not enough.

3.The original 1602 screen requires 7 IO port can drive up, this module we developed can save you 5 IO port, if need ar-duino function library, please contact us.

4.Power supply voltage: +5V.

5.Support I2C protocol.

6.Having a backlight, and contrast adjustment potentiometer.

7.4 line output is more simple.