# SCD41M-2HA – CO₂ measurement for Home As...

The SCD41-2HA module measures CO₂ (carbon dioxide) is designed for direct integration into Home Assistant using the ESPHome integration.

- **Seller:** [Devices for Home Assistant](https://www.lectronz.com/stores/https-lectronz-com-stores-x2ha), Saint Germain-en-Laye, France
- **Price:** €35.00 (EUR, before shipping and taxes)
- **Availability:** Coming soon
- **Categories:** Equipment, ESP32
- **Product page:** https://www.lectronz.com/products/copy-of-scd41m-2ha-co-measurement-for-home-as

## Links

- [Documentation](https://github.com/SteCheFr/SCD41-2HA/blob/main/Documentation/Installation_guide.pdf)

## Images

![SCD41M-2HA – CO₂ measurement for Home As...](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTczNjMsInB1ciI6ImJsb2JfaWQifX0=--87cbb697640859180e3a65b3eb8dc15d1640171f/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/A.jpg)
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## Description

Overview

The SCD41-2HA module measures CO₂ (carbon dioxide) is designed for direct integration into Home Assistant using the ESPHome integration.

It is based on the professional-grade Sensirion SCD41 sensor, a high-precision photoacoustic NDIR CO₂ sensor well suited for indoor air quality monitoring.

The SCD41-2HA module comes fully assembled in a very compact 58 × 36 x 15 mm enclosure and requires no hardware configuration.

⚙️ Technical Specifications

Sensor: Sensirion SCD41

Technology: Photoacoustic NDIR

CO₂ Measurement Range: 400 to 5000 ppm

CO₂ Accuracy: ±50 ppm – ±2.5% of measured value

Unlike most other CO₂ sensors, this module lets you choose between manual calibration and auto-calibration.
		
Connectivity: Wi-Fi

Integration: Native Home Assistant support via ESPHome integration

Power Supply: 5 V via USB Type-C connector


🏠 Home Assistant Integration

Installation steps:

Plug the module into a 5 V USB-C power supply.

Connect it to your Wi-Fi network.

It will be automatically detected, or you you will need to add it via the ESPHome integration.

The CO₂ entities will appear automatically in Home Assistant.

🧰 Typical Use Cases

Indoor air quality monitoring

Automating ventilation or air purifiers based on CO₂ levels

Displaying live air quality data on Home Assistant dashboards


## Shipping policy

All orders are dispatched within 3 business days.
In the rare event of a delay, I will proactively reach out to keep you updated. Your satisfaction and project timeline are my priorities!