Summary: S8601A CO2 detector adopts carbon dioxide sensor and temperature and humidity sensor. The instrument is used to measure carbon dioxide content and temperature and humidity in the environment, and is widely used in agriculture, aquaculture and industrial fields. Such as: planting greenhouses, livestock farms, beer, carbonated beverages, energy saving and environmental protection products production process and underground operation safety production. In our daily living environment such as: kindergartens, schools, office buildings, shopping malls, supermarkets, stations, hospitals and other public places, monitoring of carbon dioxide concentrationcan improve the quality of air, therebyimproving learning and work efficiency; Prevent the spread of infectious diseases and public health and safety. Features: Measuring CO2 content, temperature, humidity Temperature unit: °C / °F conversion Measurement result HOLD function LCD two-line display, showing both CO2 content and temperature and humidity. Green/yellow/red backlight prompt function Automatic shutdown function 3 x 1.5V AAA batteries (does not include) Warmtips: The measuring range of the instrument is 400-5000ppm. If it exceeds 5000ppm, H1 be displayed and there be a continuous beep. It needs to be shut down and restarted before testing. S8601A is an infrared sensor. Infrared sensors are more sensitive and accurate in measurement Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Material: plastic colour: black+red Package Contents: 1 x detector Only the above package content, other products are not included. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!