Dm306D Hot Mini CO2 Pm2.5 Detector Temperature Unit T&F Switchable Air Quality Monitor

Langder Technology Co.,Ltd is a modernized comprehensive scientific research enterprise which was established in March 2013, located in Shenzhen City, Guangdong Province China. 
It is mainly in the business of research and development, production, sales of all kinds of Testing instruments and tools , It has established extensive cooperative relations with partners 
in Netherlands,Spain, Germany ,France, Britain, Poland, Switzerland,Italy,Ireland, Romania,Chile, Mexico, the United States,Japan,korea etc. 
At present, the factory is mainly producing and supplying : 

1. All kinds of air quality montior detectors 
including : 
-CO2 Meter with  wirelss TUYA WIFI app 
-WALL mount CO2 Meter
-Mini Smart CO2 Meters
-Mult-function Air quality monitor test CO2  pm2.5,PM1.0,PM10,HCHO,TVOC
2. Decibel Meter
3.Decibel & CO2 Meter
4.Ozone ( O3 ) Meter
5.NH3 Detector Meter
6.Weather station with TUYA WIFI APP
7.Alcohol Tester
8.Radiation detector

our ceritificates : CE, ROHS, PSE Battery MSDS 
Since its establishment , the Company has won the title of China's national high-tech enterprise and is the top quality merchant of Alibaba for years,
Production scale has 3000 square meters, and with 100 employees. 
Langder has a strong independent research and development team, all Products are from its own private designs and have the apperance patents. 
It not only provides system solutions for various industries, but also provide product design and OEM services for customers .

1 Q: What the test index are include for air quality monitor? 
A : CO2: is for carbon dioxide,Infrared sensor(NDIR) Temperature and Humidity 
 
Suitable for detecting CO2 concentration in industrial, agricultural and residential environments.
Control the ventilation system according to the monitored target value (CO2 concentration).
 
2 . Q: What is the standard range for CO2? 
A: CO2 Test Range: 
400~1000 ppm 
1001~2000ppm
2001~5000ppm
Temperature Test Range: 0-50ºC
Humidity Test Range 0-95%RH ; 
 
 3.  Q: How to charge it? 
A:  mini  USB port  charging line which is included in the standard  accessories .  
We also offer adapter(Like US adapter, Europe adapter...) if  add extra cost. 
 
 
 4.  Q: How about OEM or custom? 
A: Sure, Asprofessional and stable manufacture for CO2 merter factory, we can support many custom contents as below; 
a  Printing logo on product .
b  Package, support custom pacakge(We can send neutral artwork to client to design package) 
c  Manual, support custom maual for many language,like English, German, Japanese, Spanish, Dutch, Polish
d.  some custom sticker, like Amazon FBA upc label... To meet clients requirement.
e. Customized  software  is also possible  such as  change the CO2 standard value  , such as  shoot logo  display , such as  customized  language display  Etc .

 5.  Q: what's certificate include? 
A: 1.CE and Rohs 2. MSDS and UN38.3

Common fields 
1. Carbon dioxide monitoring of various industrial and agricultural plants, workshops, greenhouses, clean rooms,
etc. 
2. Ventilation control and environmental quality monitoring required for homes, villas, office buildings, meeting rooms,
classrooms and other fields. 
3. Ventilation control and environmental quality monitoring in public places such as hotels, exhibition halls, hospitals, shopping
malls, bars, restaurants, airports, train stations, entertainment halls, and theaters. 
4.Units that produce and use carbon dioxide gas, etc. 
Non-mandatory reference rating: 
a) 350 ~ 400ppm-usual outdoor air level. 
b) 400 ~ 1,000ppm-typical value in well-ventilated living space. 
c) 1,000 to 2,000 ppm-an air level that is inadequate, sleepy, and sufficient to cause complaints 
d) 2,000 ~ 5,000ppm-stagnant, old, sultry air level. It is headache and drowsiness, accompanied by
inattention, decreased concentration, rapid heartbeat and slight nausea. 
e)> 5,000 ppm-Exposure to it may cause severe hypoxia, resulting in permanent brain damage, coma and even death.