Data Storage Export Download Carbon Dioxide Pm2.5 Pm10 Formaldehyde
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Product Highlights
- 10-in-1 Air Quality Detection: Monitors CO2, PM2.5/10/1.0, HCHO, TVOC, AQI, Temp, Humidity, and O2 in real time.
- Data Storage & Export: Built-in storage for up to 90 records with easy PC download and analysis via USB.
- Infrared CO2 Technology: Uses advanced NDIR technology for accurate CO2 detection ranging from 400-5000 ppm.
- Customizable OEM/ODM: Accepts customized orders for product name, size, material, and color specifications.
- Rechargeable Battery: Features a 1500mAh Li-Battery with USB charging for portable and convenient use.
- Multi-Language Support: Supports temperature unit switching between Celsius and Fahrenheit for global use.
- Professional Manufacturer: 10+ years experience with own factory, R&D team, and CE/RoHS/FCC certifications.
- Lifetime Service Warranty: Provides 1-year warranty with lifetime technical support and after-sales service.
Product Attributes
- Customization
- Available
- After-sales Service
- Yes
- Warranty
- 1 Year
- Model NO.
- DM509
- Product Name
- Multi-Function Air Quality Detector with Data Stor
- Product Size
- 164*74*26mm
- Material
- ABS
- Color
- Black+Orange
- Display
- LCD Screen
- CO2 Technology
- Infrared ( Ndir )
- Temperature Unit
- Switch Between Celsius and Fahrenheit
- Pm2.5 Detection Range
- 0-999 Ug/M³
- CO2 Detection Range
- 400-5000 Ppm
- Power Supply
- Rechargeable Li-Battery 1500mAh Including USB Cha
- Hcho Detection Range
- 0.001-1.999mg/M³
- Tvoc Detection Range
- 0.001-9.999mg/M³)
- Transport Package
- Neutral Box
- Specification
- 164*74*26MM
- Trademark
- Dienmern
- Origin
- Shenzhen, China
- HS Code
- 9027100090
- Production Capacity
- 50000 Pieces/Year
- Package Size
- 24.00cm * 18.00cm * 6.00cm
- Package Gross Weight
- 1.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
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Product Description
-Product Name : Multi-function Air Quality Detector with Data Store and Download
-Material : ABS
-Color : Black + Orange
-Product Size : 164*74*26MM
-Display : LCD Screen Display
-CO2 Technology : Infrared (NDIR)
-PM2.5 Sensor technology : Laser Scattering -HCHO/TVOC technology :Electrochemistry
-Detection Range :
--AQI (0-500) --PM2.5 (0-999 ug/M³) --CO2 (400-5000 ppm)
--HCHO (0.001-1.999Mg/M³)
--TVOC (0.001-9.999Mg/M³)
--Temperature (-10°C to 50°C)
--Humidity (20% - 85%)
Feature:
-With Color Indicatior
-Temperature Unit Switch (ºC/ºF)
-CO2 Alarm On/Off, O2 Alarm Value is 1000ppm
-Measuring Item: CO2 / PM1.0 / PM2.5 / PM10 / HCHO / TVOC / AQI Temperature / Humidity
-1500mAh Capacity Rechargeable Lithium Battery, 5V DC Micro USB Charging Cable
Packages:
-Packing amount: 22pcs/ctn --Carton size: 550*280*260mm
-G.W.: 12.5KG


DM509 supports data store and download to PC. Operation steps as below:
Step1: Download the CO2 Sensor.zip through the link: https://www.alcohol-tester.co/dm509.zip.
Important: The number of records stored in the CO2 sensor is limited to 90 records. After reaching the 90-record limit, the first record will be deleted and replaced by the latest record. The frequency of records in one day will determine the number of days before the device starts to delete the first record.
Following table provides a clear overview of the inter-record unit, its corresponding frequency, and the number of days before the device starts to delete the first record.
| Inter-Record Unit | Frequency | Quantities of Days |
| 1h | 24 | 4 |
| 2h | 12 | 8 |
| 4h | 6 | 15 |
| 6h | 4 | 22 |
| 12h | 2 | 45 |


Langdeli Technology Co., Ltd. is a professional manufacturer with 10 years of experience in producing testing instruments, committed to providing customers with high-quality and high-performance testing instruments. The company has advanced production equipment, a professional R&D team and sales team, as well as its own factory, production workshop, and office buildings.
detectors, noise detectors, temperature and humidity detectors, combustible gas detectors, radiation monitors, alcohol measuring instruments, etc.
We have our own factory and office buildings, covering a total area of 5000 square meters. We have advanced production equipment and technology, which enables us to independently complete the entire process from raw material procurement to product production. Our factory has a complete production process and quality management system, ensuring that every step meets the company's quality requirements.
Our Production line:
We are well aware that product quality is the lifeline of a company, so we always adhere to high-quality and high standard production processes. We have a professional quality inspection team that strictly controls every step from raw material procurement to production processes. We focus on the quality and performance of our products, continuously optimizing production processes and quality management to ensure that every product meets national standards and certification standards.
Our products have passed multiple certifications, such as CE, RoHS, PSE, FCC, etc. These certifications indicate that our products meet the entry standards for overseas markets in terms of safety, environmental protection, health, and other aspects. This means that when you purchase our products, you can use them with more confidence, without worrying about the impact they may have on your health and environment.


1. Who are we?
We are manufacturer that has been producing and exporting various testing and digital instruments over 11 years. We are based in Guangdong, China, starting from 2013, sell to North America(25.00%), Western Europe(20.00%), Southern Europe(13.00%), Eastern Europe(9.00%), Northern Europe(8.00%), South America(7.00%), South Asia(5.00%), Eastern Asia(5.00%), Southeast Asia(5.00%), Central America(2.00%), Mid East(1.00%). There are total about 51-100 people in our office.
2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment.
Certificates can be provided, including CE, Rohs, FCC, MSDS, UN38.3, ISO9001 etc.
3. What can you buy from us?
a.WiFi Tuya meter (CO2/PM2.5/PM1.0/PM10/Temperature/Humidity/HCHO/TVO)
b.Wall mounted decibel meter
c.PM2.5 detector, combined with CO2/Temperature/Humidity
d.Multi-functional detector measuring PM2.5/HCHO/CO2/PM1.0/PM10/temperature/humidity
e.Geiger counter, nuclear radiation detector/electromagnetic radiation detector
f.O3 (Ozne) meter
g.NH3 meter
h.CO meter
i.O2 meter
j.Alcohol detector
k.Mental detector
4. Why should you buy from us not from other suppliers?
a.Accept customized OEM/ODM orders.
b.We provide one-year warranty and lifetime service for customers.
c.Accept third-party inspection service to guarantee quality for you.
d.Our products are private, developed and produced by our factory independently.
5. What services can we provide?
a.Accepted Delivery Terms: FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery;
b.Accepted Payment Currency: USD, HKD, CNY;
c.Accepted Payment Type: T/T, L/C, D/P, D/A, MoneyGram, Credit Card, PayPal, Western Union, Cash, Escrow;
d.Language Spoken: English, Chinese.
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASI232972". Items marked "" are certified.
Company Profile
Langdeli Technology Co., Ltd. is a professional manufacturer with 10 years of experience in producing testing instruments, committed to providing customers with high-quality and high-performance testing instruments. The company has advanced production equipment, a professional R&D team and sales team, as well as its own factory, production workshop, and office buildings.
Since its establishment, the company has been dedicated to the research and development, production, and sales of testing instruments. We have established strategic partnerships with multiple large companies to provide customized testing instrument solutions. At the same time, we actively explore domestic and international markets, providing high-quality products and services for enterprises and individual users.
The company has a professional R&D team, constantly following up on the latest developments in domestic and foreign testing technologies, and applying the latest technologies to products. Our products cover multiple fields such as environmental testing, food safety, medical and health, including air quality detectors, water quality detectors, soil detectors, noise detectors, temperature and humidity detectors, combustible gas detectors, radiation monitors, alcohol measuring instruments, etc.
As a high-tech enterprise, Langdeli Technology attaches great importance to technological innovation and quality improvement. At the same time, we also attach great importance to intellectual property protection and have multiple invention patents and utility model patents.
The company has a comprehensive sales team and channel system, which can quickly respond to customer needs and provide professional pre-sales consultation and after-sales service. Our products have been widely used in government agencies, environmental protection departments, health supervision departments, food enterprises and other fields, and have received high recognition and praise from users.
The company has its own factory and office buildings, covering a total area of 5000 square meters. We have advanced production equipment and technology, which enables us to independently complete the entire process from raw material procurement to product production. Our factory has a complete production process and quality management system, ensuring that every step meets the company's quality requirements.
We are well aware that product quality is the lifeline of a company, so we always adhere to high-quality and high standard production processes. We have a professional quality inspection team that strictly controls every step from raw material procurement to production processes. We focus on the quality and performance of our products, continuously optimizing production processes and quality management to ensure that every product meets national standards and certification standards. Our products have passed multiple certifications, such as CE, RoHS, PSE, FCC, etc. These certifications indicate that our products meet the entry standards for overseas markets in terms of safety, environmental protection, health, and other aspects. This means that when you purchase our products, you can use them with more confidence, without worrying about the impact they may have on your health and environment.
In the future, Langdeli Technology Co., Ltd. Will continue to be committed to providing high-quality and high-performance testing instruments to provide users with higher quality products and services. We will continue to innovate and make progress, striving tirelessly to become a leading global manufacturer of testing instruments. We believe that through our efforts and innovation, we can become your trusted partner.
About Our Factory & Business Background
- Address
- Shenzhen, Guangdong, China
- Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment, Money Gram
- International Commercial Terms(Incoterms)
- FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA
- Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays - Nearest Port
- shenzhen
Our Production Capability & Technical Expertise
- Main Products
- Air Quality Montior, Gas Detector, Mini Camera, Voice Recorder, Geiger Counter
Our Industry Experience & Global Business Record
- Export Year
- 2013-05-17
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- What air quality indicators does this detector monitor?
- It monitors CO2, PM1.0, PM2.5, PM10, HCHO, TVOC, AQI, Temperature, Humidity, and O2.
- How much data can the device store?
- The device can store up to 90 records. Once full, it overwrites the oldest record with new data.
- Can I export the stored data to a computer?
- Yes, you can connect the device via USB cable and download the data table to your PC for analysis.
- Is customization available for this product?
- Yes, we accept OEM/ODM orders. You can customize the product name, size, material, and color.
- What is the warranty period for this device?
- We provide a 1-year warranty and lifetime technical service for all our products.
- What is the typical delivery time?
- Delivery takes 2-30 days depending on quantity. In-stock items ship in 1-3 days; customized orders take 20-30 days.
- What certifications does the product have?
- Our products have passed CE, RoHS, PSE, FCC, MSDS, UN38.3, and ISO9001 certifications.
- What is the detection range for CO2?
- The CO2 detection range is 400-5000 ppm using Infrared (NDIR) technology.
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