ACD1100 Infrared Carbon Dioxide Sensor

The ACD1100 Carbon Dioxide Sensor by Asair is a compact and reliable infrared sensor, specifically engineered for precise CO₂ measurement in indoor environments. Utilizing Non-Dispersive Infrared (NDIR) technology, the ACD1100 provides steady and consistent readings, making it ideal for air quality monitoring, Heating, Ventilation, and Air Conditioning (HVAC) systems, smart home devices, and industrial applications.
Its 5-volt power source, low power consumption, and dual connectivity options (I²C and UART) ensure compatibility with a wide range of microcontrollers and development platforms such as Arduino and Raspberry Pi. With a long lifespan exceeding 5 years and rapid data updates every two seconds, it is perfect for real-time continuous monitoring.
 

Features

• High-precision CO₂ detection (±50 parts per million + 5% of the reading)
• Broad measurement range: 400–5000 parts per million
• Dual interface: I²C and UART
• Quick response time with data updates every two seconds
• Compact size for easy installation
• Ideal for air quality monitoring, smart homes, and industrial use

Technical Specifications

Pin Definitions

Dimensions (mm)

• Width: 33mm
  Height: 22mm
  Thickness: 14.5mm
  Mounting Hole Distance: 28mm
  Infrared Sensor Diameter: 9.9mm