Features:

1. Easy to use. Less I/O ports are occupied, only four - VCC, GND, SDA (serial data line), SCL (serial clock line).
2. Support IIC protocol. The I2C LCD1602 library is provided, so you can call it directly.
3. With a potentiometer used to adjust backlight and contrast.
4. Power supply: +5V.
5. Address of the module: ox27.

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, 0x3F
• Working Voltage: 5V