Product Description
Company Profile
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 .
FAQ
1.Q: What items can this tester test?
A: It is a multifunctional tester that can test CO2, PM2.5, TVOC, HCHO(Formaldehyde), Temperature and Humidity
2.Q: What is the test range of CO2?
A: CO2 test range: 400-5000ppm
3.Q: What is the test range of PM2.5, TVOC and HCHO(Formaldehyde)?
A:
PM2.5 test range: 0-999 ug/M3
TVOC test range: 0.001-9.999mg/M3
HCHO test range: 0.001-9.999mg/M3
4.Q: What is the standard range for CO2?
A: Good 400-1000
Medium 1001-2000
Unhealthy >2000
5.Q: What is the standard range for PM2.5?
A: Good 0-12
Medium 12-35
safe value 35-70
Unhealthy more than 70
6.Q: What is the safe range for formaldehyde (HCHO) and TVOC?
A: HCHO≤ 0.10mg/M3
TVOC≤ 0.60mg/M3
Just for reference, standard may be different in different countries.
7.Q: Which kinds of air index exceeded, would lead to Alarm sound?
A: Just CO2 data is more than 1000ppm, would lead to Beep sound.
8.Q: What is the test range of temperature and humidity?
A:
Temperature test range: -10°C - 50°C
Humidity test range: 20% - 85%
9.Q: How to charge it?
A: DC 5V(1A-2A) port charging line which is included in the standard accessories .
We also offer adapter(Like US adapter, Europe adapter...) if add extra cost.
10.Q: How about OEM or customizations?
A: As professional and stable manufacture for manufacture factory, we can support many custom contents as below:
a> Printing logo on product .
b> Package, support custom package(We can send neutral artwork to client to design package)
c> Manual, support custom manual 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 standard value , such as shoot logo display , such as customized language display Etc .
11.Q: what's certificate include?
A:
a> CE and Rohs
b> MSDS and UN38.3
c> ISO9001
12.Q: What products your factory produce?
A:
-Multifunctional Air quality monitor test CO2 pm2.5,PM1.0,PM10,HCHO,TVOC
-CO2 Meter with wirelss TUYA WIFI app
-WALL mount CO2 Meter
-Mini Smart CO2 Meters
-Decibel Meter
-Decibel & CO2 Meter
-Ozone ( O3 ) Meter
-NH3 Detector Meter
-Weather station
-Alcohol Tester
-Radiation detector
-Multimeter
-Electromagnetic radiation detector
-Radon detector
13.Q: What are the payment methods?
A :
(1) Alibaba transaction guarantee (2% of the additional cost)
(2) TT (Bank wire transfer ,an additional $25 per payment).
14.Q: What is the delivery time?
A:
After confirm the order, it will take about 2-30 days to delivery goods depend on the order quantity .
some models we have stocks , so 1-3 days will delivery goods
some models not in stocks, if quantity is small , 5-10 days
Customized order, it will take 20-25 days normally
for bulk orders up to 30000pcs , it will take 30 days
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