TVOC Gas Sensor

Assess local air quality with this compact TVOC (Total Volatile Organic Compounds) gas sensor from Waveshare, with its ability to detect TVOC, CO₂ (Carbon Dioxide), and CH₂O (Formaldehyde) concentrations in the environment.

The sensor connects to your microcontroller using the included SH1.0 6-pin cable assembly, with female header ends ready to plug into your dev boards' GPIO pins. It operates at 5V, communicates via UART and includes 2mm/M2 mounting holes for securing to your project.

The product wiki includes examples for using this sensor with Raspberry Pi, Pico, Arduino, ESP32-S3 and STM32.

Connection Example

Features

• Detects TVOC (Total Volatile Organic Compounds), CO₂ (Carbon Dioxide) and CH₂O (Formaldehyde) concentrations in the environment
• Supports UART communication
• Operates at 5V
• Includes SH1.0 6-pin cable assembly with female header ends
• 2mm/M2 mounting holes for easy installation
• High sensitivity
• Low power consumption
• Long lifespan
• Compact size

Specifications

Operating voltage	5V	Logic level	3.3V
Communication interface	UART	Baud rate	115200bps
Response time	< 20s	Switch-on time	< 120s
Detection range	0.1ppm ~ 100ppm	Refresh rate	1Hz
Dimensions	27 × 20 × 4.3 (mm)	Mounting hole size	2.0mm
Operating current	≤60mA	Operating temperature	-20°C ~ 50°C
Operating humidity	≤96%RH	Lifespan	Up to 5 years

Resources

• Product wiki

Pinout

VCC	5V power input
GND	Ground
TXD	UART TX pin
RXD	UART RX pin
RST	Reset pin (low active)
ALM*	Alarm pin

Package Contents

• 1x TVOC sensor
• 1x SH1.0 6-pin cable