Detect various gases. Most household gases can be detected without worrying about suitability. Sound and light alarm, formaldehyde TVOC sensor This gas monitor can detect and monitor air problems at any time to the health of family members or employees. Home, workplace, school, daycare center or any other location. Using natural airflow detection technology can more accurately determine air quality problems. The air quality monitor is also an important tool for property inspections or use any household tool to see if there is an abnormal amount of toxins released. The portable gas detector is powered by a rechargeable lithium battery, which is easy to carry, energy-saving and environmentally friendly, and has a long standby time. It is widely used in homes, offices, enterprises, governments, schools and automobiles. Colour: yellow Material: plastic Package Contents: 1 * carbon monoxide meter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.