CO2 Meter CO2 Detector Multifunctional Thermohygrometer Home Intelligent Gas yzer Household Digital Air Pollution Monitor

What is the difference between semiconductor r and infrared r?

A: working princle The working princle of infrared r is to determine the CO2 concentration through the infrared light in the module and the receiving time to the receiver at the other end. The accuracy is very high. The working princle of semiconductors is to determine the CO2 concentration by sensing the content of irritating gases in the air. B: advantages&disadvantages Semiconductor r: stable performance, low consumption and long service life. However,it is very sensitive to organic gases, especially active organic gases such as , formaldehyde, vinegar, oil fume, etc., and is easily affected by this, causing changes in the readings. Infrared r: good selectivity, not easy to be affected by harmful gases and poisoning and , fast response and good stability, high signal-to-noise ratio, and accurate detection.

3in1 Semiconductor r

Function: A new three-in-one air quality monitor for carbon dioxide detector, hazard aement, temperature and humidity detection, intelligent alarm system, gas recognition algorithm, multle anti-interference, air convection technology. Chs: High-performance chs are accurate and outstanding. Princle: Use more profeional infrared optical princles to accurately and quily detect carbon dioxide. Large screen design, clear and easy to see: Made of high-quality materials, practical, easy to operate and use, and long service life. Application areas: Agricultural planting, vegetables, production warehouses, raw material proceing, home interiors, etc. Specifications: Item name: Air quality monitor Air quality monitor Material: ABS Color: Bla, white Size: 9 x7x3. 5 cm CO2 measuring range: 400-5000ppm range: 0-50℃ Humidity measuring range: 0％-99％RH Battery: 3.7V, 1200mAh Model Number: Air Quality Detector Gas Type: CO2 With LCD Screen Or Not: Ye

3in1 Infrared r

1. This CO2 detector can accurately and quily test the indoor carbon dioxide level. At the same time, it provides real-time monitoring of indoor temperature and humidity. 2. Using infrared technology, the measurement accuracy is high, the response speed is fast, the resolution can reach 1ppm, it can accurately detect CO2 in the air, and the measurement range can reach 400-5000ppm. 3. This indoor air carbon dioxide meter has a 4-color LED indicator as an air quality warning. Indicator lights of different colors will f according to the CO2 content to make the air quality more intuitive. 4. The 1200mAh provides 240-360 minutes of standby time and can be charged through the Type-C charging port. 5.2.8 inch LCD screen with balight display, the display is clear and soft, and the reading is clear. 6. Portable size, convenient to carry around. easy to use. No need to calibrate after starting up, work automatically and detect automatically. Specifications: Item name: Infrared CO2 r Item color: Bla Material: ABS Display mode: LED digital display + LCD screen + balight CO2 detection technology: infrared CO2 measurement range: 400-5000PPM CO2 detection sensitivity: 1PPM Temperature measurement range: 0-50°C Temperature measurement accuracy: ±1°C Humidity measurement range: 0%-99%RH Humidity measurement accuracy: ±2%RH Battery capacity: 1200mAh lithium battery Charging port: 5V Type-C port Product size: 9.0*7.0*3.5cm Product weight: 129g Paing size: 11.5.0*11.5*4.5cm Paage weight: 191g DIY Supplies: ELECTRICAL Certification: None Model Number: Smart CO2 Measurement Meter Gas Type: CO2 With LCD Screen Or Not: Ye

5in1 Semiconductor r

The 5-in-1 profeional air quality meter has advanced rs and recognition algorithms to accurately measure HCHO, CO2, TVOC, temperature and humidity, with low error, and easily understand the air quality around you. It can also provide average and overall environmental quality color indications for each type of air. Accurately detects carbon dioxide. The large display shows power, CO2, temperature and humidity. Equped with a LCD screen display and 24-hour real-time function, you can clearly see the data at any time. Different font colors show different air quality, green 400-450ppm, blue 451-700ppm, purple 701-1000ppm, yellow 1001-2000ppm, red 2001-5000ppm. Hundreds of ventilation holes at the rear not only accelerate the convection between the air and the hine, thus realizing effective detection, but also provide a good heat diation effect. Specifications: Name: Carbon dioxide detector Material: ABS Colors: White Size: 9x7x3.5cm Screen size: 2.8 inch Screen type: TFT-LCD Screen resolution: 240 * 240 Response time: