Display Type
Character LCD Module
Display Size
20 columns × 4 rows (20×4)
Controller IC
HD44780 or compatible
Interface
Parallel (4-bit/8-bit) or I2C (via PCF8574 adapter)
Operating Voltage
5V DC (3.3V compatible with I2C adapter)
Backlight
White/Green/Blue LED (varies by model)
Character Matrix
5×8 dot format
Contrast Control
Adjustable via onboard potentiometer (I2C version)
Dimensions
~98 × 60 × 14 mm
Viewing Area
~76 × 25 mm
Power Consumption
<2mA (no backlight)
Compatible With
Arduino UNO, Nano, Mega2560, ESP32, STM32, Raspberry Pi