This is IIC/I2C Serial Interface Adapter Module.

This is a RoHS compliant I2C Serial LCD Daughter board that can be connected to a standard162 or 204 Character Display Module that supports 4-bit mode. All Character Modules sold on our site support 4-bit mode, and nearly all commercially available 162 and 204 line character modules support it too.

This board has aPCF8574I2C chip that converts I2C serial data to parallel data for the LCD display. There are many examples on the internet for using this board with Arduino. Do a search for Arduino LCDPCF8574. The I2C address is 0x3F by default, but this can be changed via 3 solder jumpers provided on the board. This allows up to 3 LCD displays to be controlled via a single I2C bus (giving each one its own address)

Specifications and Features:

1. 5V power supply.
2. Serial I2C control of LCD display usingPCF8574.
3. Backlight can be enabled or disabled via a jumper on the board.
4. Contrast control via a potentiometer.
5. Can have 8 modules on a single I2C bus (change address via solder jumpers)address, allowing.
6. Size 41.6 x 19.2 mm.

Package Includes:

1 x IIC/I2C Serial Interface Adapter Module