Welcome to our store! Overview: The S8601A CO2 detector uses a carbon dioxide sensor and a temperature and humidity sensor. This instrument measures the carbon dioxide concentration, temperature, and humidity in the environment. It's widely used in agriculture, aquaculture, and industrial settings. Such as: greenhouse cultivation, livestock farms, breweries, carbonated beverage production, energy conservation, environmental protection, and underground safety production. In our daily living environments, such as: Preschools, schools, office buildings, shopping malls, supermarkets, stations, hospitals, and other public places, monitoring carbon dioxide concentration can improve air quality, thereby improving learning and work efficiency. It also helps prevent the spread of infectious diseases and protect public health and safety. Features: Measures CO2 concentration, temperature, and humidity. Temperature unit: C / F conversion. Measurement result HOLD function. LCD dual-line display showing both CO2 concentration, temperature, and humidity. Green/yellow/red backlight prompt function. Automatic power-off function. Requires 3 x 1.5V AAA batteries (not included). Warm Tips: The instrument's measuring range is 400-5000ppm. If it exceeds 5000ppm, H1 will be displayed, and a continuous signal will sound. It must be turned off and restarted before testing. The S8601A uses an infrared sensor, which is more sensitive and accurate in measurement. Note: The product may be continuously updated. The actual product may have slight differences or color variations. The color and appearance are subject to change. Please be aware of this and consider it before placing an order if you have specific requests regarding color or appearance. Material: Plastic Color: Black+Red Package Contents: 1 x Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowable measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately, and we will provide you with the best solution!