Which kinds of air index exceeded would lead to Alarm sound?

Just CO2 data is more than 1000ppm, would lead to Beep sound.

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.

How about OEM or customizations?

We can support many custom contents: a> Printing logo on product. b> Package, support custom package. c> Manual, support custom manual for many languages. d> some custom sticker, like Amazon FBA upc label. e> Customized software is also possible such as change the standard value, shoot logo display, customized language display.

What's certificate include?

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

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 Tester Indoor Harmful Gas Analyzers

Name: Tuya WiFi Connection Multi-Function Gas Detector CO2/Pm2.5/Hcho/Tvoc Tester Indoor Harmful Gas Analyzers
Brand: Shenzhen Langdeli Technology Co., Ltd.
SKU: 2083331615

Guangdong, ChinaShenzhen Langdeli Technology Co., Ltd.

US$45.00

2-499 Pieces

US$42.00

500-999 Pieces

US$40.00

1,000+ Pieces

Sample price:US$45.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

DM72B-WIFI

Brand

Dienmern

Customized

Portable

Desktop

Certification

CE, RoHS

Gas

CO2/Pm2.5/1.0/10/Hcho/Tvoc

Type

Desktop

Product Name

Multifunction Air Quality Detector

Sensor

Infrared(Ndir) / Laser Scattering / Semiconductor

CO2 Detection Range

400-5000ppm

CO2 Detection Accuracy

± 50 Ppm or 5%

Pm2.5 Detection Range

0-999ug/M³

Pm2.5 Detection Accuracy

±10ug/M³ or ±10%

Display

LCD Screen Display

Weight

250g

Certificate

CE, RoHS

Power Supply

3000mAh Rechargeable Li-Battery, USB Port

Usage

Home, Office, Gym, Classroom, Hospital, Theater, B

Transport Package

Neutral Box

Specification

220*150*140mm

Origin

China

HS Code

9027100090

Key features

Multi-Function Detection: Measures CO2, PM2.5, PM10, TVOC, HCHO, Temperature, Humidity, and AQI.

Smart WiFi Connectivity: Supports WiFi connection to mobile or laptop via the TUYA APP for remote monitoring.

Customization Support: Offers logo printing, custom packaging, manuals, and software customization options.

Portable Desktop Design: Compact size (145*78*97.2mm) with metal and ABS material, weighing only 225g.

Rechargeable Battery: Equipped with a 3000mAh rechargeable Li-battery and USB port for convenient charging.

LCD Screen Display: Features an LCD screen for clear and real-time display of all detected data.

Professional Certifications: Certified with CE, RoHS, MSDS, UN38.3, and ISO9001 for quality assurance.

OEM/ODM Services: Provides product design and OEM services with strong independent R&D capabilities.

Company profile

Shenzhen Langdeli Technology Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2013-05-17Nearest Port: shenzhenAverage Response Time: ≤6.78hTerms 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.