Features Supply voltage: 5V the backlight and contrast is adjusted by potentiometer Come with 2 IIC interface which can be connected by Dupont Line or IIC dedicated cable Compatible for 1602 LCD This is another great IIC/I2C/TWI/SPI Serial Interface With this I2C interface module you will be able to realize data display via only 2 wires. If you already has I2C devices in your project this LCD module actually cost no more resources at all. It is fantastic for Arduino based project Specifications: Size:54*19 mm(max) Net weight:6 g Package weight:16 g Main Color:Black Packing Content: 1 x IIC/I2C/TWI/SPI Serial Interface Board Module Port