Model No Quantity 1 Color Green + red Material PCB board Specification 2.6" LCD display; Input voltage: DC 5V; 1 LAT: 74HC595 data storage terminal; 2 DAT: I2C / TWI / IIC SDA 74HC595 data terminal; 3 CLK: I2C / TWI / IIC SCL 74HC595 pulse terminal; 4 +5V: 5V input; 5 GND: Power supply negative pole Features Transfer serial data to parallel data via I2C / TWI / IIC bus or SPI bus and send to LCD1602 to control it; Control LCD1602 with 4 I2C or 5 SPI cables; Allows to adjust contrast via onboard potentiometer Application For DIY project Packing List 1 x LCD1602 1 x Expansion adapter board