Features for 1602 LCD:Wide viewing angle and high contrast.Built-in industry standard HD44780 equivalent LCD controller.Commonly used in: copiers, fax machines, laser-printers, industrial test equipment, networking equipment such as routers and storage devices.LCM type: CharactersCan display 2-lines X 16-characters.Voltage: 5V DC.Module dimension: 80mm x 35mm x 11mm.Viewing area size: 645mm x 16mmFeatures IIC/I2C :for 1602 I2C interface 4-wire 1602 screenIO port of for control board is only 20,so IO ports is not enough for many sensor, SD card, relay modules.The 1602 screen need 7 IO ports to drive up, and this module can save 5 IO portsColour:green + blackMaterial:PCB + electronic componentstype:blue screenPackage Contents:1 x LCD Module DisplayOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.