What certifications does the product have?

The product is CE certified and fully RoHS compliant, manufactured according to ISO standards.

How is the device installed?

Installation methods include sleeve fixing and optional flange adapters.

Sentec Sem333 Outdoor Th No2 Co Pm2.5pm10 So2 O3 Gas Sensor

Name: Sentec Sem333 Outdoor Th No2 Co Pm2.5pm10 So2 O3 Gas Sensor
Brand: Chengdu Sentec Technology Co., Ltd.
SKU: 2102904305

Sichuan, ChinaChengdu Sentec Technology Co., Ltd.

US$125.00-550.00

1 Piece

Product profile

Customization

Available

Type

Infrared Gas Sensor

Conductivity Type

Volume Control Type

Model NO.

SEM333

Output Signal Type

Digital Type

Production Process

Integration

Material

Plastic

IP Rating

IP65

Sensitivity

High

Certification

Customized

Power Supply

DC12V~24V

Power Consumption

<1W (12V)

Signal Output

Default 485 Output, Modbus RTU Protocol. Expandabl

Operating Environment

Temperature: -40~85℃; Humidity: 5~100%Rh (Non-Cond

Installation Method

Sleeve Fixing, Flange Adapter Optional.

Housing Material

ASA Material.

Protection Rating

IP65

Transport Package

Carton

Specification

T H NO2 CO PM2.5 PM10 SO2 O3

Trademark

SENTEC

Origin

Chengdu

HS Code

9027100090

Production Capacity

5000

Key features

Comprehensive 9-Parameter Monitoring: Monitors PM2.5, PM10, temp, humidity, pressure, illuminance, noise, CO2, and dew point.

Customizable Power and Output: Supports DC12V-24V power supply and customizable signal output including Modbus RTU.

Durable IP65 Weatherproof Design: Constructed with ASA material and IP65 rating for reliable outdoor performance.

Versatile Installation Options: Supports sleeve fixing and optional flange adapters for flexible deployment.

Smart City Integration Ready: Ideal for urban grid monitoring, smart streetlights, and construction site dust control.

Low Power Consumption: Energy efficient with power consumption less than 1W at 12V.

CE Certified Quality: Fully RoHS compliant and CE certified ensuring high manufacturing standards.

Company profile

High Repeat Buyers ChoiceIn-stock CapacityCustomization from SamplesProduct Certification

Chengdu Sentec Technology Co., Ltd.

Sichuan, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2011-03-01Average Response Time: ≤9.87hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, CPT, Others, FCA

AI-Powered supplier vetting

SummaryChengdu Sentec Technology Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory in the electrical and electronics sector. Its stated products include multiple sensor and transmitter categories, while company descriptions highlight sensor technology development, intelligent monitoring solutions, and OEM experience. The supplier reports ISO 9001 certification, 11–20 years of R&D engineer experience, 6–10 quality-control staff, and more than 10 production lines. It has exported since 2011 and reports that 51%–70% of sales are exports, with self-operated import and export rights. An audit by BV is recorded, but the supplied audit result is “0” and the report validity period ended on 2024-11-15; the meaning of the result is not provided. Evidence remains insufficient for financial credibility, after-sales capability, overseas service coverage, detailed customization services, and verified customer cases.

Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory, with a limited-company structure and electrical and electronics trade focus. This supports its ability to operate as a product supplier with manufacturing involvement, although the relative scale of trading versus manufacturing is not stated.

CertificationsThe supplier reports ISO 9001 certification, and a BV audit record is provided with a stated validity period from 2023-11-16 to 2024-11-15. However, the audit result is recorded as “0,” and no interpretation or currently valid certification evidence is supplied, so the positive certification evidence is limited to the stated ISO 9001 holding.

R&D capabilityCompany descriptions state that industry experts participate in sensor R&D and innovation, that advanced production technologies are continuously introduced and developed, and that the supplier has 11–20 years of R&D engineer experience. Specific evidence for new-product output, SDK availability, 3D design, ODM, or other measured innovation deliverables is unknown.

Production capacityThe supplier is identified as a manufacturer/factory, offers several sensor and transmitter product categories, reports more than 10 production lines, and describes industrialized and systematized production. These details provide explicit evidence of substantial production infrastructure, although capacity volume and utilization are not stated.

Customization capabilityThe supplier explicitly states it has experienced OEM services and develops sensing technology solutions for customers, which supports some customization capability. Nevertheless, the availability of ODM, OEM for popular brands, 3D software design, and new-product development services is marked unknown, so the full customization scope cannot be verified.

Product Q&A

Q:What parameters does the SEM333 monitor?

It monitors nine outdoor parameters: PM2.5, PM10, ambient temperature, relative humidity, air pressure, illuminance, noise, CO2, and dew point temperature.

Q:What is the power supply requirement?

The device supports a DC12V~24V power supply with power consumption less than 1W at 12V.

Q:Is the product customizable?

Yes, the product is customized. It supports optional flange adapters and customizable signal outputs like Modbus RTU.

Q:What are the common application scenarios?

It is suitable for urban grid environmental monitoring, smart streetlights, scenic areas, factories, mines, construction sites, and public places.

Q:What communication protocol is used?

The default output is RS485 using the Modbus RTU protocol, with baud rates of 2400, 4800, or 9600.