JANSANE 20x4 2004 LCD Arduino Display Screen Blue + IIC I2C Module Interface Adapter for Arduino Uno Raspberry pi 2 Pack

Specification: Display: 4 lines x 20 characters Backlight: Blue with white character color LCD controller: HD44780 Pin Definition: VCC/ GND/SDL and SCA Contrast Adjust: Potentiometer Backlight Adjust: Jumper Default Address: 0x27 for PCF8574T chip; 0x3F for PCF8574AT chip Working Voltage: 5V 100% Satisfaction Guarantee 12-Month Warranty; No satisfied ,Free reason for return; We could also resent you new one due to quality problem. Package: 2 pack blue 20x4 2004 lcd display + I2C serial interface