Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Detection Gases	VOC, CO2, Formaldehyde (HCHO)
Communication Interface	UART / TTL
Operating Voltage	5V DC
CO2 Measurement Range	400 - 5000 ppm
TVOC Measurement Range	0 - 9.99 mg/m³
Formaldehyde Range	0 - 1.00 mg/m³
Response Time	< 60 seconds
Operating Temperature	-10°C to 50°C
Dimensions	32mm x 20mm x 8mm
Warm-up Time	Approx. 3 minutes

6 reviews

Anonymous

Mar 27, 2026

Rating: 3/5

Works but requires some coding knowledge

The hardware is fine, but if you aren't familiar with parsing serial data, you might struggle initially. Once configured, it provides good insights into room air quality.

Anonymous

Mar 26, 2026

Rating: 5/5

Compact and reliable

Small footprint makes it easy to fit into tight enclosures. Documentation was clear enough to get started quickly. Highly recommend for DIY air quality monitors.

Anonymous

Mar 12, 2026

Rating: 4/5

Good sensitivity, needs calibration time

The sensor works well once it warms up. Make sure to let it run for at least 3 minutes before taking serious readings. The formaldehyde detection is a nice bonus feature for new furniture testing.

Anonymous

Mar 09, 2026

Rating: 5/5

Excellent data consistency

Running this 24/7 connected to a Raspberry Pi. The data stream is consistent and hasn't drifted much over the last month. Very satisfied with the build quality.

Anonymous

Mar 07, 2026

Rating: 5/5

Perfect for my smart home project

This module integrated seamlessly with my ESP32 setup. The UART communication is stable, and the CO2 readings seem accurate when compared to my reference meter. Great value for a 3-in-1 sensor.

Anonymous

Mar 06, 2026

Rating: 4/5

Solid performance for the price

I've been using this to monitor my office ventilation. The VOC spikes correctly detect when I use cleaning sprays. Only minor issue is the cable length could be longer.

5 FAQ

Q: Can this sensor detect carbon monoxide (CO)?

A: No, this specific 3-in-1 model detects VOCs, CO2, and Formaldehyde only. It does not detect Carbon Monoxide (CO). Please check our specialized CO sensors for that requirement.

Q: Does this module require an external library for Arduino?

A: While you can write your own parser, we provide a sample Arduino library on our GitHub repository to help you get started quickly with reading the UART data.

Q: Is the sensor pre-calibrated from the factory?

A: Yes, each unit undergoes factory calibration. However, for high-precision applications, we recommend performing a fresh air baseline calibration after installation.

Q: Does it come with a connector or just pins?

A: The module comes with standard 2.54mm pitch pins soldered. Connectors are not included but can be easily attached using standard Dupont wires or jumper cables.

Q: What is the power consumption during operation?

A: The typical operating current is around 80mA at 5V. We recommend using a stable power supply to ensure accurate readings during the heating element's warm-up phase.

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