Description: CO2/ temperature / humidity / instant measurement trend recorder. Historical trend chart: minute / hour / day / week /RH temperature carbon dioxide readings, scalable timeline chart. Dual channel temperature NDIR sensor, built-in plant type catalogue. Easy to identify 3-color LED, easy to operate HOLD HOME function, ventilation function. The scope of application of this product: schools, hospitals, business premises, airports, stations and so on. Specification: Material: Plastic Operating temperature: 32 ~122? Storage temperature: 4 ~140? Operation and storage: 0-95%RH, no condensation. Carbon dioxide detection: 0~3000pm: ± 50ppm or ± 5% Repeatability: 20ppm at 400ppm (standad: 10 data in 1 minutes) Exceeding 3000ppm: ± 7% Measurement range: 0-5000ppm Resolution: 1ppm (0-1000); 5ppm (1000-2000); 10ppm (>2000) Temperature compensation: reading value of + 0.2%, or 2ppm per centigrade (maximum) reference standard 25? Pressure compensation: 0.13% mmHg reading (corrected by input height) Response time: 63% change
