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