Summary: The S8601A CO2 detector features a carbon dioxide sensor along with temperature and humidity sensors. This device 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, beverage production, energy-saving processes, and underground operations. It is also suitable for everyday environments including kindergartens, schools, offices, shopping malls, supermarkets, transportation hubs, and hospitals. Monitoring CO2 levels helps improve indoor air quality, enhance learning and work efficiency, and support public health and safety. 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 indication: green, yellow, or red based on CO2 levels - Auto power-off function to conserve battery life - Powered by 3 x 1.5V AAA batteries (not included) Note: - Measurement range: 400–5000 ppm. If levels exceed 5000 ppm, the display will show "H1" with a continuous beep. The device must be turned off and restarted to continue operation. - Utilizes an infrared sensor for high sensitivity and accuracy in CO2 detection. - Product design, color, or appearance may vary slightly due to updates. Please note that the actual product may differ from images. Consider this before placing an order if specific color or appearance is required. Material: Plastic Color: Black + Red Package Contents: 1 x Detector (Other items not included)