LCD display 2-lines, 16-character alphanumeric with controller HD44780, blue backlight, white characters and I²C interface. Particularly indicated to reduce the number of I / O required when used with Arduino or other microcontroller, the I²C interface has jumper to activate the backlight and contrast adjustment that is done by a small trimmer. Power supply: 2.5-6 Vdc, dimensions (mm): 80x36x19, Weight: 100 grams.