The 2004 LCD Display Module Green is a 20-character by 4-line alphanumeric green backlight LCD that provides 80 total character positions on screen — exactly 2.5 times more display area than the 16-character by 2-line 1602 LCD module — making the 20×4 lcd display the right choice for projects that need to show more information simultaneously, such as multi-sensor readouts where each parameter has its own label and value on a separate line, longer menu systems that would require scrolling on a 2-line display, or data logging status screens that show timestamp, reading, unit, and status together. Each of the four lines shows 20 characters, giving the lcd display module enough space to display clearly labeled information without abbreviation across all four rows at the same time.
The 2004a display module uses the standard HD44780-compatible character LCD controller — the same controller used by the 1602 LCD — which means the lcd display arduino code uses the identical LiquidCrystal library already familiar to Arduino builders from the 1602 module, with only the row and column count changed in initialization. The green backlight and black character dots provide a high-contrast classic LCD display appearance that is clearly readable in indoor lighting conditions, and the 5V DC supply from the Arduino’s regulated output powers the display directly without additional regulation.
The 2004 lcd display price-accessible module is compatible with Arduino, ESP32, STM32, and any microcontroller that can drive the HD44780 parallel interface or an optional I2C adapter module for pin-reduced wiring. Available from StemVolt, This 2004 lcd display module is ideal for Arduino ESP32 multi-line sensor display menu system status screen and STEM project large LCD display.
Related Products:
Features:
- 20×4 display— 80 characters vs 1602’s 32 character capacity
- 4 separate lines — display label and value on each row
- 2004 LCD Display Module — high-contrast readable indoor display
- 5V DC low power — powers from Arduino regulated 5V output
Technical Specifications:
| Specification | Details |
|---|---|
| Model | LCD2004 |
| Display Type | 20 × 4 Character LCD Display Module |
| Display Format | 20 Characters × 4 Lines (80 Characters) |
| Supply Voltage | 5V DC |
| Backlight Color | Green |
| Power Consumption | Low Power |
Applications:
- Arduino multi-sensor display showing four parameters on separate LCD lines
- Builds ESP32 menu system using 20×4 lcd display module
- STEM project for lcd display arduino 4-line status and data screen
- Data logger status display with timestamp reading unit and status line
- 2004 LCD Display Module for 20×4 HD44780 LCD interface
Package Includes:
-
1 × 2004 LCD Display Module Green














Suraj Yadav –
Reliable module quality
Chatrapal Singh Tanwar –
Plenty of display space
Jigme Tenzing –
I used this 2004A LCD display module in an IoT project, and readability was excellent.
Swanand Deshpande –
Perfect for IoT projects
Gopalakrishnan Iyer –
Smooth buying experience
Sukhdev Dhillon –
The 20×4 LCD display provides ample space for sensor data and menus.
Supratim Chakraborty –
Technical support was helpful
Jaiveer Ahlawat –
Neatly packed product