Specification Brand : GalaxyElec ExternallyAssignedProductIdentifier : 5302611326919 ItemName : 2004 20x4 2004A Character LCD Display/w IIC/I2C Serial Interface Adapter Board ItemTypeKeyword : lcd-character-modules Manufacturer : GalaxyElec Material : Copper PartNumber : GEmoduleo_10696 ProductDescription : Item Description Features for 1024 LCD Display Feature for IIC/I2C: 1602 I2C interface 4-wire 1602 screen IO port of control board is only 20,so IO ports is not enough for many sensor, SD card, relay modules. The original 1602 screen need 7 IO ports to drive up, and this module can save 5 IO ports. Package including: 1pcs 2004 20x4 2004A Character LCD Display Module Blue Blacklight 1pcsIIC/I2C Serial Interface Adapter Module ProductSiteLaunchDate : 2019-10-10T09:26:54.211Z UnspscCode : 39120000