This is a RoHS compliant I2C Serial LCD Daughter board that can be connected to a standard 16×2 or 20×4 Character Display Module that supports 4-bit mode. All Character Modules sold on our site support 4-bit mode, and nearly all commercially available 16×2 and 20×4 line character modules support it too.
 
Specifications and Features:
	
5V power supply.
	
Serial I2C control of LCD display using PCF8574.
	
Backlight can be enabled or disabled via a jumper on the board.
	
Contrast control via a potentiometer.
	
Can have 8 modules on a single I2C bus (change address via solder jumpers)address, allowing.
	
Size ：41.6 x 19.2 mm.