1、With this I2C interface LCD module, you only need to realize data display through 2 wires, no more resources to expend. 2、The LCD display has IC serial 20X4 LCD module, suitable for IIC/I2C 2004 LCD module. 3、Made of plastic, light weight, good corrosion resistance, great intensity, simple processing technology. 4、The size of the LCD display is about 9.7 x 6 x 2cm/8 x 4 x 0.8in, the pcb is about 60 x 99 mm/4 x 9in. 5、The backlight of the display showd yellow and black character, you can use jumper to adjust the backlight. 1 x LCD Display Condition: 100% Brand NewItem Type: LCD DisplayMaterial: PlasticColor: As Pictures ShownSize: Approx. 9.7 x 6 x 2cm/ 3.8 x 2.4 x 0.8inSuitable for IIC/I2C 2004 LCD moduleInterface: I2CI2C Address: 0x20Software Version: 0022SDA (Data)-+ Analog Input Pin 4SCL (Clock)-+ Analog Input Pin 5Pin Definition: GND_VCC_SDA_SCLBacklight (Yellow, Black Character Color)Power Supply Voltage: DC5VPCB Size: Approx. 60 x 99 mm/ 2.4 x 3.9inContrast Adjustment: PotentiometerBacklight Adjustment: Jumper