TENSTAR SCD40 SCD41 Gas Sensor Module 2.4-5.5V Detects CO2 Carbon Dioxide Temperature and Humidity Sensor I2C Communication

Description

Upgrade your indoor‑air‑quality projects with the TENSTAR SCD40 / SCD41 Gas Sensor Module. Designed for precise detection of CO₂, temperature, and humidity, this compact I²C‑compatible sensor operates from 2.4 V to 5.5 V, making it perfect for Arduino, Raspberry Pi, ESP32, and other micro‑controller platforms.

Key Highlights

• Dual‑model flexibility: works with both SCD40 and SCD41 sensor chips
• Accurate CO₂ measurement range: 400 ppm – 10,000 ppm (SCD40) / 0 ppm – 10,000 ppm (SCD41)
• Integrated temperature (‑40 °C – 125 °C) and relative humidity (0 % – 100 % RH) sensing
• Low power consumption – ideal for battery‑operated and IoT devices
• Standard I²C interface (0.8 MHz max) for fast, reliable data transfer
• Wide operating voltage: 2.4 V – 5.5 V, compatible with 3.3 V and 5 V systems
• Compact 20 mm × 20 mm footprint for space‑constrained designs

Why Choose TENSTAR SCD40 / SCD41?

Built with TENSTAR’s proven quality standards, this sensor module delivers long‑term stability and repeatable performance. Its factory‑calibrated CO₂ algorithm eliminates the need for external calibration gases, saving you time and money.

Technical Specifications

• Supply Voltage: 2.4 V – 5.5 V
• CO₂ Accuracy: ±(30 ppm + 3 % reading) for SCD40, ±(30 ppm + 3 % reading) for SCD41
• Temperature Accuracy: ±0.2 °C
• Humidity Accuracy: ±2 % RH
• Communication: I²C (address 0x62), optional UART on SCD41
• Response Time: CO₂ – < 2 s, Temperature/Humidity – < 0.5 s
• Operating Temperature: –40 °C – 85 °C
• Dimensions: 20 mm × 20 mm × 5 mm (module)

Easy Integration

The TENSTAR SCD40 / SCD41 module comes with a ready‑to‑use breakout board, pre‑soldered pins, and comprehensive libraries for Arduino, ESP‑IDF, and Python. Start measuring indoor air quality within minutes:

• Plug‑and‑play with standard 4‑pin I²C header
• Open‑source driver code and example sketches included
• Full documentation and technical support from TENSTAR

Ideal Applications

Perfect for smart home ventilation, HVAC monitoring, greenhouse climate control, air‑purifier feedback loops, and any IoT project that requires reliable CO₂, temperature, and humidity data.