Function and compatibility I2C interface adapter for 1602 and 2004 LCD modules that converts the LCD's parallel data into a serial I2C signal, enabling data display over a twowire I2C bus. Key benefits Reduces wiring: the adapter requires only 4 host connections instead of wiring 16 LCD pins, simplifying integration. Multidisplay support: up to 6 displays can be operated simultaneously by using 6 selectable IIC addresses. Minimal host resources: enables data display with only two main data wires on the I2C bus, freeing GPIOs for other tasks. Fast transmission: designed for efficient data transfer between the host and LCDs. Specifications Supply voltage: 5V Nominal current rating: 2 mA Size: 41.4 mm x 19 mm x 15.8 mm (L x W x H) Compatible with: 1602 and 2004 LCD modules Interface: I2C/IIC/TWI/SPI Serial Interface Addressing: 6 selectable IIC addresses for simultaneous operation of up to 6 displays What makes it stand out Efficient 4port host interface vs 16pin LCD connections Flexible I2C addressing enables multiple displays on a single system Small form factor with low power consumption suitable for embedded projects Practical use scenarios Microcontroller projects with multiple small LCDs: connect several 1602/2004 displays to an Arduino, ESP32, or Raspberry Pi via a single I2C bus while preserving GPIO availability. Embedded control panels: deploy a compact LCD array for status dashboards in consumer electronics or home automation, using distinct I2C addresses to display different data streams. Industrial monitoring and data logging: run multiple LCD readouts on a single controller, reducing wiring complexity and simplifying layout in compact enclosures. Performance and reliability notes Provides a straightforward path to display data from a host over I2C with minimal wiring changes. Designed to maintain reliable operation across typical 5V embedded environments and standard LCD modules.