Summary: S8601A CO2 detector uses a carbon dioxide sensor and temperature and humidity sensor. The instrument is used to measure the carbon dioxide content and temperature and humidity in the environment, and is widely used in agriculture, aquaculture and industry. For example: greenhouses, animal husbandry farms, beer, carbonated drinks, energy-saving and environmental protection products manufacturing process and underground safe production. In our daily environment, such as: kindergartens, schools, office buildings, shopping malls, supermarkets, stations, hospitals and other public places, monitoring the carbon dioxide concentration can improve air quality, which in turn improves learning and work efficiency; Prevent the spread of infectious diseases and public health and safety. Functions: Measure CO2 content, temperature, humidity Temperature unit: C / F conversion Measurement result HOLD function LCD two-line display, displays both CO2 content and temperature and humidity. Green/yellow/red backlight prompt function Automatic power off function Description: 3 x 1.5V AAA batteries (not included) Warm tips: The measuring range of the instrument is 400-5000ppm. If it exceeds 5000ppm, H1 will be displayed and a continuous beep will be heard. It must be turned off and restarted before testing. S8601A is an infrared sensor. Infrared sensors are more sensitive and accurate in measurement Tips: The product may be updated continuously, the actual product may have slight differences or color differences, the color and appearance may change, please do not mind. And please consider this before ordering if you have a request for 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 be slightly different from the real thing. The allowable measurement error is +/- 1-3cm.