Features: <br>This adapter solves problem that IO port is not enough when connecting sensor, card or relay modules to control board. <br> <br>Original 1602 display need 7 IO port to drive, while this adapter can save 5 IO port for you. <br> <br>It supports I2C protocols, designed with IIC/I2C port. <br> <br>Designed with backlight and contrast ratio adjustment potentiometer. <br> <br>Convenient to use, 4-wire output is more simple. <br> <br> <br> <br>Specifications: <br>Power Supply Voltage: +5V <br>Device Address: 0x20 <br>Size: 5.2*2.4cm/2.05*0.94in <br>Weight: 5g(approx.) <br> <br> <br>Package Includes: <br>1 x Adapter Board<br>1、This adapter solves problem that IO port is not enough when connecting sensor, card or relay modules to control board. <br>2、Original 1602 display need 7 IO port to drive, while this adapter can save 5 IO port for you. <br>3、It supports I2C protocols, designed with IIC/I2C port. <br>4、Designed with backlight and contrast ratio adjustment potentiometer. <br>5、Convenient to use, 4-wire output is more simple.