What is the delivery time?

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.

Tvoc Research Data

Name: Multi-Function Indoor Air Quality Detector Data Export Download CO2/Pm2.5/Pm10/Aql/Hcho (Formaldehyde) /Tvoc Research Data
Brand: Shenzhen Langdeli Technology Co., Ltd.
SKU: 1960198871

Guangdong, ChinaShenzhen Langdeli Technology Co., Ltd.

US$60.00

2-99 Pieces

US$54.00

100-499 Pieces

US$52.00

500+ Pieces

Sample price:US$55.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

DM69M-WIFI

Brand

Dienmern

Customized

Portable

Certification

CE, RoHS

Gas

CO2/Pm2.5/Pm10/Hcho/Tvoc/Aqi/Temp/Hum

Type

Desktop Multifunction Air Quality Monitor

Product Name

Air Quality Detector with Data Log and Download

Color

White

Material

ABS

CO2 Technology

Infrared ( Ndir)

CO2 Measuring Range

400-5000 Ppm

Pm2.5 Measuring Range

0-999 Ug / M3

Power Source

3000 mAh Rechargeable Lithium Battery

Transport Package

Neutral Package

Specification

190*80*52mm

Origin

Shenzhen, China

HS Code

9027100090

Key features

11-in-1 Multifunction Monitoring: Real-time detection of CO2, PM2.5/10, HCHO, TVOC, AQI, Temp, Humidity, and more.

Tuya WiFi Smart Connection: Connects to mobile app for anytime, anywhere real-time data viewing and monitoring.

Data Storage and Export: Built-in storage records historical data; supports quick export for trend analysis.

Customizable OEM/ODM Service: Supports custom logo, packaging, manuals, stickers, and software language/logo display.

Rechargeable Battery Design: Equipped with 3000mAh lithium battery and 5V DC Micro USB charging cable.

Comprehensive Certifications: Products passed CE, RoHS, MSDS, UN38.3, and ISO9001 approvals.

Professional Manufacturer: Established in 2013 with strong R&D team, private designs, and appearance patents.

Global Market Presence: Distributed worldwide with partners in Europe, Americas, Asia, and other regions.

Company profile

Shenzhen Langdeli Technology Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2013-05-17Nearest Port: shenzhenAverage Response Time: ≤11.31hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA

AI-Powered supplier vetting

SummaryLangdeli Technology Co., Ltd. is identified as a China-based manufacturer/factory specializing in testing instruments, including air-quality monitors, gas detectors, radiation monitors, and related devices. The supplier reports 10 years of manufacturing experience, its own factory and production facilities, more than 10 production lines, an ISO 9001 management-system certification, and 6–10 R&D engineers and quality-control staff. It also states that its products hold CE, RoHS, PSE, and FCC certifications and that it has invention and utility-model patents. The supplier claims customized solutions, strategic partnerships with large companies, broad institutional and enterprise usage, and sales and after-sales service capabilities. However, the provided information does not establish independent verification of these claims, detailed financial strength, or specific customer names and project outcomes.

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and describes itself as a professional testing-instrument manufacturer with its own factory, production workshop, and office buildings. Its stated product scope includes air-quality monitors, gas detectors, radiation monitors, and other testing instruments.

CertificationsThe supplier reports ISO 9001 certification for its management system and states that its products have passed CE, RoHS, PSE, and FCC certifications. These are explicit certification claims, although the provided slices do not include certificate numbers, validity dates, or issuing-body verification.

After-Sales capabilityThe supplier states that it has a comprehensive sales team and channel system capable of quickly responding to customer needs and providing professional pre-sales consultation and after-sales service. The evidence supports the existence of a stated service structure, but does not provide service-level metrics, response times, warranty terms, or repair arrangements.

R&D capabilityThe supplier identifies itself as a high-tech enterprise, reports a professional R&D team, emphasizes technological innovation, and claims multiple invention and utility-model patents. It also reports 6–10 years of combined R&D-engineer experience, providing explicit positive evidence of innovation resources and activity.

Production capacityThe supplier states that it operates its own factory and production workshop, has advanced production equipment, and runs more than 10 production lines. It also reports 6–10 quality-control staff, indicating established production and quality resources, although actual capacity, output, and utilization are not specified.

Customization capabilityThe supplier explicitly states that it provides customized testing-instrument solutions and maintains R&D, production, and sales capabilities for testing instruments. This supports customization capability, but the slices do not specify customization scope, engineering lead times, minimum order quantities, or examples of completed customized products.

Client casesThe supplier reports strategic partnerships with multiple large companies and says its products are used by government agencies, environmental-protection departments, health-supervision departments, food enterprises, and other fields. These statements indicate broad claimed application and customer exposure, but no customer names, order details, or independently verifiable case studies are provided.

Product Q&A

Q:What items can this tester test?

It is a multifunctional tester that can test CO2, PM2.5, PM1.0, PM10, HCHO, TVOC, AQI, Temperature, Humidity.

Q:What is the test range of these gas?

CO2:400-5000ppm PM2.5:0-999 ug/M3 HCHO:0.001-1.999 Mg/m3 TVOC:0.001-9.999 Mg/m3

Q:How about OEM or custom?

Sure, 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 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 standard value

Q:What's certificate include?

a. CE and Rohs b. MSDS and UN38.3 c. ISO9001

Q:What products your factory produce ?

Multi-function Air quality monitor ( CO2 PM2.5,PM1.0,PM10,HCHO,TVOC ), CO2 Meter, Ozone Detector, NH3 Detector, Weather Station , Decibel Meter, Alcohol Tester, Multimeter, Radon Detector, Geiger Detector ( Nuclear Radiation Detector ), Electromagnetic Detector