1. I2c address: 0x20.
The backlight and contrast is adjusted by potentiometer.
4. Come with 2 iic interface, which can be connected by dupont line or iic dedicated cable.
5. Compatible for 1602 lcd.
1 x LM2596 Buck Step-down Power Converter Module DC 4.0~40 to1.3-37V Voltmeter
IIC/I2C/TWI/SPâ€‹â€‹I Serial Interface Board Module Port For Arduino 1602LCD Display