Specification:
This is another great IIC/I2C/TWI/SPI serial interface. Since the pin resources of controller are limited, your project may not be able to use a normal LCD shield after connecting it with a certain number of sensors or SD card. However, with this I2C interface module, you can realize data display through only 2 wires. If you already have I2C devices in your project, this LCD module actually costs no more resources at all.

Feature:
Supply Voltage: 2.5-6V
Supports I2C protocol
Dimensions: 41.5*19*15.3mm
PCB Color: Black

Backlight control allows you to set the backlight power supply via a jumper. Insert the jumper to connect the backlight power supply, unplug the jumper to disconnect the backlight power supply.

Contrast can be adjusted by rotating the blue potentiometer clockwise strengthened counterclockwise weakened. Potentiometer design on the front panel, allowing you to adjust freely at any time.

Change the device address via short circuit A0/A1/A2, the default address is 0x27.

Address change instructions: (Take the default address 0x27 as an example)
A0, A1, A2 are all floating and the device address is 0x27
Short circuit A0, the device address is 0x26
Short circuit A1, the device address is 0x25
Short circuit A2, the device address is 0x23

....
A0, A1, A2 are all short circuit and the device address is 0x20

Wiring instructions:
GND: negative
VCC: positive
SDA: IIC data line
SCL: IIC clock line

Package included:
6PCS I2C IIC Serial Interface Adapter Board For 1602