| After-sales Service: | 1 Year |
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| Warranty: | 1 Year |
| Brand: | Dienmern |
| Samples: |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
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item
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value
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Warranty
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12 months
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Type
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portable
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Customized support
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OEM, ODM, OBM, Software reengineering
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Place of Origin
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China
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Guangdong
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Brand Name
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Dienmern
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Model Number
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DM125-Wifi
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Product Name
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Wifi CO2 PM2.5 Air quality Monitor
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Material
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ABS
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CO2 Sensor
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infrared ( NDIR)
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PM2.5 Sensor
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Laser Scattering
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Measure Components
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CO2 PM2.5 PM1.0 PM10 AQI
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Power Supply
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3000mAh lithium battery rechargeable
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CO2 Range
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0-5000 ppm
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Warranty
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12 Months
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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 items can this tester test?
A: It is a multifunctional tester that can test CO2, PM2.5, PM10,PM1,AQI Temperature and Humidity
2.Q: What's special about this product?
A: It can be connected to your phone through wifi, you can check the real monitoring result of the device on Tuya APP on your phone.
Besides, you can view the historical test record curve of the past period of time on the device.
3.Q: How to connect the device with cellphone?
A: This operation is very simple, just follow the steps of the manual, you can easily connect,Suitable for all smart phones.
4.Q: What is the test range of CO2?
A: CO2 test range: 400-5000ppm
5.Q: What is the test range of PM2.5 ?
A:
PM2.5 test range: 0-999 ug/M3
6.Q: What is the standard range for CO2?
A: Good 400-1000
Medium 1001-2000
Unhealthy >2000
7.Q: What is the standard range for PM2.5?
A: Good 0-12
Medium 12-35
safe value 35-70
Unhealthy more than 70
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
Suppliers with verified business licenses
Audited Supplier 
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