LCD2004 20×4 Character LCD Display with I2C Adapter — Blue Backlight

LCD2004 20×4 Character LCD Display with I2C Adapter — Blue Backlight

The LCD2004 with I2C adapter — a 20-character × 4-line HD44780 character LCD with a PCF8574 I2C backpack pre-soldered. Display 80 characters of text, numbers, and custom characters using only 2 wires (SDA + SCL). The largest standard character LCD available with I2C interface — ideal for displaying multiple sensor readings, menus, and status information simultaneously.

Key Specifications

• Display: 20 characters × 4 lines | Controller: HD44780
• Interface: I2C via PCF8574 | I2C address: 0x27 (default, adjustable)
• Supply: 3.3–5V | Backlight: Blue with white characters
• Contrast: Adjustable via on-board potentiometer
• Library: LiquidCrystal_I2C (Arduino)
• Compliance: RoHS compliant

Why LCD2004 I2C?

• ✅ 80 characters across 4 lines — display temperature, humidity, pressure, and time simultaneously
• ✅ Only 2 wires — SDA + SCL, freeing Arduino pins for sensors and actuators
• ✅ Pre-soldered I2C backpack — ready to use, no soldering required
• ✅ LiquidCrystal_I2C library — same code as LCD1602 I2C, just change dimensions

Typical Applications

• Multi-sensor data display (4 readings simultaneously)
• Arduino menu system with 4-line navigation
• Weather station display (temperature, humidity, pressure, time)
• Industrial controller 4-line status panel
• Data logger real-time status display

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Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

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