Description:

The CJMCU-811 Digital Gas Sensor Module is a low-power, high-precision sensor designed to detect indoor air quality by measuring carbon dioxide (CO2) and a wide range of volatile organic compounds (VOCs). Built with a CCS801 sensor and an integrated 8-bit MCU (microcontroller unit) featuring an analogue-to-digital converter (ADC), this sensor offers an accurate solution for real-time environmental monitoring. The intelligent algorithm processes and outputs TVOC and eCO2 values via the I2C interface, making it ideal for integration into various environmental monitoring systems. Whether you're developing a smart home or indoor air quality control system, this sensor ensures efficient, low-power operation and high sensitivity.

Why Choose the CJMCU-811 Digital Gas Sensor?

The CJMCU-811 sensor provides precise measurements of eCO2 levels (ranging from 400 ppm to 5000 ppm) and TVOCs, helping you monitor and improve indoor air quality. Its low-power design makes it suitable for battery-powered applications, while its compatibility with I2C communication ensures seamless integration with microcontroller systems such as Arduino, Raspberry Pi, and other embedded devices. The module is equipped with a metal oxide (MOX) sensor for reliable gas detection, and its intelligent computing algorithm ensures accurate data reporting in real-time. Whether you're creating a smart HVAC system, a home air purifier, or a health-monitoring device, the CJMCU-811 delivers dependable and efficient air quality analysis.

Key Features

Precise Indoor Air Quality Monitoring: Measures CO2 (equivalent) and volatile organic compounds (VOCs), offering a comprehensive analysis of air quality.
Low-Power Operation: Ideal for battery-powered environmental monitoring devices, with a recommended operating voltage of 3.3V.
Intelligent Algorithm: Built-in algorithm calculates TVOC and eCO2 values for accurate and real-time data output.
Easy Integration: Compatible with Arduino, Raspberry Pi, and other microcontrollers via I2C interface, ensuring hassle-free integration.
Versatile Applications: Suitable for indoor air quality monitoring systems, smart home automation, environmental monitoring, and health-related devices.

Product Specifications

Working Voltage: 1.8V to 3.6V (3.3V recommended)
Detection Range: 400 ppm to 5000 ppm for eCO2
Communication Interface: I2C interface for easy communication with microcontrollers
Supported I2C Bus Frequencies: 10 kHz to 400 kHz (100 kHz recommended)
Recommended Operating Temperature: -5°C to +50°C
Storage Temperature: -40°C to +125°C
Sensor Type: MOX (Metal Oxide) sensor for gas detection

Pin Definitions:
VCC: Power supply positive
GND: Ground
SCL: I2C serial clock line
SDA: I2C serial data line
WAK: Low level valid to disable sensor
INT: Low level valid to trigger sensor reset
RST: Low level valid for reset
ADD: I2C address selection bit

The CJMCU-811 Digital Gas Sensor Module is a powerful tool for monitoring air quality and detecting harmful gases in indoor environments. With its precise measurement capabilities, low-power operation, and easy integration, this sensor is the perfect solution for anyone looking to create a smart air quality monitoring system or environmental monitoring application. Ensure clean, safe air for your home, office, or industrial space with the CJMCU-811 sensor.