# RioRand RRLCD204WB LCD Module

> RioRand LCD Module for Arduino 20 x 4,IIC/I2C/TWI Serial 2004 White on Blue

**Wikidata**: [Q92903097](https://www.wikidata.org/wiki/Q92903097)  
**Source**: https://4ort.xyz/entity/riorand-rrlcd204wb-lcd-module

## Summary
The RioRand RRLCD204WB LCD Module is a 20x4 character liquid-crystal display module designed for Arduino, featuring I2C serial communication and white text on a blue background. It operates at 5 volts with minimal power consumption and is utilized in projects like the Open Source Ventilator Project.

## Key Facts
- **Instance of**: liquid-crystal display
- **Dimensions**: 98 mm (length) × 60 mm (width) × 14 mm (height)
- **Operating voltage**: 5 volts (at 25°C)
- **Operating temperature**: -20°C to 70°C (optimal at 25°C)
- **Power consumption**: 10 milliwatts
- **Display configuration**: 20 columns × 4 rows with white-on-blue characters
- **Interface**: I2C/IIC/TWI serial communication
- **Mass**: 1.10 ounces
- **Global Trade Item Number**: 7445803073418
- **Part of**: Open Source Ventilator Project (ventilator A)

## FAQs
### Q: What makes this module compatible with Arduino?
A: It uses an I2C serial interface (IIC/I2C/TWI), simplifying wiring and enabling direct integration with Arduino microcontrollers via two communication pins.

### Q: What is the module's physical size?
A: It measures 98 mm (length) × 60 mm (width) × 14 mm (height), with a mass of 1.10 ounces.

### Q: How does it handle temperature extremes?
A: It operates between -20°C and 70°C, with optimal performance specified at 25°C.

### Q: What unique applications use this module?
A: It is part of the Open Source Ventilator Project (ventilator A), demonstrating its role in critical medical-grade embedded systems.

### Q: What is its power efficiency?
A: Consumes only 10 milliwatts during operation, making it suitable for low-power embedded systems.

## Why It Matters
The RioRand RRLCD204WB LCD Module provides a cost-effective, compact solution for displaying status and data in Arduino-based projects. Its I2C interface reduces complexity compared to parallel modules, making it accessible for hobbyists and professionals alike. Its inclusion in medical devices like ventilators underscores reliability in safety-critical applications. The wide operating temperature range (-20°C to 70°C) ensures functionality in diverse environments, while low power consumption (10 mW) supports energy-efficient designs. This module exemplifies how standardized LCD technology enables rapid prototyping and deployment across embedded systems.

## Notable For
- Integrated into the Open Source Ventilator Project, validating its use in medical devices
- Ultra-low power consumption (10 mW) for battery-dependent applications
- Compact form factor (98×60×14 mm) maximizing space efficiency
- Robust operating range (-20°C to 70°C) for harsh environments
- GTIN 7445803073418 for standardized global supply chain tracking

## Body
### Overview
The RioRand RRLCD204WB LCD Module is a 20×4 character liquid-crystal display optimized for Arduino ecosystems. It utilizes I2C serial communication (also referenced as IIC/TWI) to minimize wiring complexity.

### Technical Specifications
- **Display Type**: Liquid crystal display with 20 columns × 4 rows
- **Character Style**: White text on blue background
- **Interface**: I2C serial protocol
- **Voltage**: 5V DC (rated at 25°C)
- **Power Usage**: 10 milliwatts (nominal)
- **Operating Temperature**: -20°C to 70°C
- **Dimensions**: 98 mm (L) × 60 mm (W) × 14 mm (H)
- **Weight**: 1.10 ounces
- **Global Trade Identification**: GTIN 7445803073418

### Applications
- Embedded systems requiring text output
- Open Source Ventilator Project components
- Arduino-based monitoring and control devices

### Compatibility
- Designed for Arduino microcontrollers
- Interfaces via I2C pins (SDA/SCL)
- Operates at 5V logic levels