S8606 CO2 detector features a carbon dioxide sensor along with temperature and humidity sensors. It is designed to measure carbon dioxide levels, temperature, and humidity in the environment and is widely used in agriculture, aquaculture, and industrial applications such as greenhouses, livestock farms, beer and carbonated beverage production, energy-saving and environmental protection product manufacturing, and underground work safety. In everyday environments including kindergartens, schools, offices, shopping malls, supermarkets, train stations, hospitals, and other public areas, monitoring carbon dioxide levels helps improve air quality, enhance learning and work efficiency, and support public health and safety by helping prevent the spread of infectious diseases. Features: - Measures CO2 concentration, temperature, and humidity - Temperature unit selectable between °C and °F - Hold function to freeze measurement readings - Dual-line LCD display showing CO2, temperature, and humidity simultaneously - Backlight color indicators: green, yellow, and red for different CO2 levels - Auto power-off function to conserve battery life - Powered by 3 x 1.5V AAA batteries (batteries not included) Notes: - Measurement range: 400–5000 ppm. If CO2 levels exceed 5000 ppm, the display will show H1 and emit a continuous beep. The device must be turned off and restarted to resume operation. - S8601 model uses a semiconductor sensor - Product design, color, or appearance may vary slightly due to updates or manufacturing changes. Please consider this before ordering if specific appearance details are important to you. - Material: Plastic - Color: Black + Red Package Contents: 1 x CO2 Detector Note: The package includes only the items listed above. Other accessories or devices shown are not included. Lighting and display differences may cause slight variations in the color of the product as seen on screen compared to the actual item. Measurement may vary by +/- 1–3 cm due to manual measurement.