ENS160+AHT21 Carbon Dioxide, Air Quality, Temperature And Humidity Sensor CO2 eCO2 TVOC

4-in-1 Comprehensive Atmospheric Sensing: Combines ScioSense ENS160 air quality processing with an AHT21 high-precision temperature and relative humidity sensor on a single module.

True Indoor Air Quality (IAQ) Metrics: Computes real-time Equivalent CO₂ (eCO₂), Total Volatile Organic Compounds (TVOC), and standardized IAQ ratings (1 – 5) directly on-chip.

Integrated On-Chip Humidity Compensation: ENS160 automatically utilizes real-time AHT21 temperature and humidity readings to eliminate environmental drift and improve gas accuracy.

Dual I²C Communication Interface: Connects over standard I²C bus protocol for simple pin multiplexing with ESP32, Arduino, and Raspberry Pi microcontrollers.

Low Power Operating Modes: Features customizable operating modes (Standard, Low Power, and Ultra-Low Power) ideal for continuous IoT climate monitoring networks.

Board Material: High-grade FR-4 glass-epoxy PCB with gold-plated trace contacts and integrated dual sensor IC package.

Technical Specifications:

Sensor Array: ScioSense ENS160 + ASAIR AHT21.

Measurement Parameters: eCO (400 – 6500 ppm), TVOC (0 – 65000 ppb), Temperature (-40°C – 85°C), Humidity (0 – 100% RH).

Operating Supply Voltage: 3.3V DC.

Interface Protocol: I²C Serial Output.

Board Color: Blue PCB with White Silkscreen & Gold-Plated Header Connections.

Usage Advice: Connect to 3.3V power, GND, SDA, and SCL lines; enable the onboard algorithm to feed AHT21 temperature/humidity data into the ENS160 core for automatic environmental compensation.

Maintenance: Keep the optical and MOX sensing elements clear of dust, liquids, and silicone vapors; do not touch the micro-machined sensing chip surface directly.

Essential All-in-One Climate Node: Position as the ultimate 4-in-1 environmental sensor for smart home HVAC systems, automated greenhouse controls, office air purifiers, and IoT weather nodes.

Highlight Dual-Chip Environmental Compensation: Emphasize how pairing the AHT21 with the ENS160 allows the module to auto-correct TVOC and eCO₂ calculations for humidity changes in real time.

Recommended Cross-Sell Add-ons: Pair with CCS811 Air Quality Sensor, MQ-135 Air Quality Gas Sensor, PMS5003 Dust laser Sensor Module, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Air Quality Sensor collection page as your flag-ship multi-parameter gas, temperature, and humidity sensor board.