Specification:
Origin: Mainland China
Description: It uses a semiconductor TVOC sensor, which is characterized by low price and high sensitivity. The disadvantage is that it can only detect, compared with infrared sensors, the data is not accurate enough (called qualitative but not quantitative), and can only detect mixed carbon dioxide, such as carbon dioxide exhaled by the human body, and cannot detect pure carbon dioxide
Description:
This machine is equipped with a carbon dioxide sensor and a temperature and humidity sensor, which can measure the carbon dioxide concentration in the air and the ambient temperature and humidity in real time. The measurement range of carbon dioxide concentration is 400-5000ppm. When the concentration is between 400-800, a green strip is displayed. This means that the carbon dioxide concentration in the air is low and the air is in a normal state. The green and yellow bands are displayed between 800 and 1200 at the same time, which means that the carbon dioxide concentration is higher. In this environment, it is harmful to the human body, and green, yellow and orange stripes are displayed between 1200 and 1500ppm, indicating that the air is not good for the human body; if it exceeds 1500, the green, yellow, orange and red bands simultaneously show that the carbon dioxide concentration is seriously exceeded. When it exceeds 5000ppm, it may cause suffocation or even death. You should open the window for ventilation immediately
Button operation:
Press once to switch the temperature, twice to turn on and off the sound, 3 times to enter the calibration interface, 4 times to enter the screen off state (press once to light up the screen)
Parameters:
CO2 measurement range: 400-5000ppm
CO2 measurement accuracy: ±150PPM
Temperature measurement range: 0-50°C
Temperature measurement accuracy: ±1°C
Humidity measurement range: 0%-99%RH
Humidity measurement accuracy: ±2%RH
HCHO: 0-0.6mg/m³
TVOC: 0 -2.0mg/m³
Screen size: 2.8 inches
Screen type: TFT-LCD
Screen material: glass
Screen resolution: 240*240
Response time: <1s
Working voltage: 5V/1A adapter charging (Type-C interface)
Built-in lithium battery: 2000mAh
Rated voltage: 3.7V
Charging time: 3-4 hours
Usable time: 24 hours
Shell material: ABS
Product size: about 90.00x70.00x35.00mm/3.54x2.76x1.38inch
Note:
Due to different monitor settings and lighting conditions, the actual color of the item may vary slightly from the pictures. Thanks for your understanding!
Please allow a 1-2 cm difference in measurements due to manual measuring.
Package Content:1 x Air Quality Monitor