SensorChina.org — China Sensor Suppliers & Products Directory
Why SensorChina?
Get quotes faster, compare suppliers easier, and connect directly via WhatsApp/Email.
Core Products
For buyers, integrators, and brands: gas sensors, pressure sensors, temperature sensors, motion/occupancy, RFID, optical and more.
Gas Sensors
Target Gases: CO, CH4, H2S, NH3, O2, VOCs | Tech: Electrochemical, MOS, Catalytic, NDIR
Gas detection for safety alarms, HVAC monitoring, industrial transmitters, and smart buildings.
- Electrochemical / Semiconductor / Catalytic / NDIR options
- LEL/ppm/%VOL measurement ranges
- Long-term stability & anti-poison designs
- Modules, elements, and transmitters
- Ideal for gas alarms & IoT devices
Pressure & Flow Sensors
Pressure: Gauge/Absolute/Differential | Output: I²C/Analog/4–20mA | Media: Air/Liquid
Pressure sensing for HVAC, industrial control, water systems, and instrumentation.
- High accuracy & temperature compensation
- OEM-friendly packages and modules
- Wide pressure ranges & media compatibility
- Calibration support and integration docs
- Suitable for controllers & transmitters
Motion / Occupancy / Optical / RFID
PIR/ToF/Radar | Light/UV/IR | UHF RFID Modules & Readers
Sensing and identification for smart spaces, automation, retail, logistics, and security.
- Occupancy & people presence detection
- Optical sensing for monitoring and control
- UHF RFID modules/readers for integration
- Low-power designs for embedded systems
- SDK/docs support for faster development
Specification Comparison
A fast, practical comparison to help you choose the right sensing principle for your product or project.
| Selection Factor | Electrochemical | MOS (Semiconductor) | Catalytic (Pellistor) | NDIR (Infrared) |
|---|---|---|---|---|
| Best for | Toxic gases / O2 | VOCs / combustible trends | LEL combustible gases | CO2 / refrigerants (some) |
| Accuracy | High | Medium | Medium | High |
| Poison resistance | Medium | Low–Medium | Medium–Low | High |
| Power consumption | Low | Low–Medium | Medium | Medium |
| Typical life | 2–5 years | 2–5 years | 2–5 years | 5–10 years |
| Notes | Calibration recommended; cross-sensitivity may apply | May drift with humidity/temperature; requires compensation | Protect sensing bead; poisoning reduces sensitivity over time | Keep optical path clean; stable long-term for many gases |
Tip: Always confirm the target gas, range, output type, environment (temperature/humidity), and required certifications before final selection.
Application Scenarios
For buyers, integrators, and brands: gas sensors, pressure sensors, temperature sensors, motion/occupancy, RFID, optical and more.
FREQUENT QUESTIONS
Start Sourcing Sensors with Confidence — Faster Discovery, Clear Specs, Direct Contact
We focus on practical sourcing: verified supplier pages, organized product categories, and technical-friendly content (datasheets, selection guides, and application notes). Manufacturers can list products for free to get discovered by international buyers.
How can manufacturers list products and improve visibility?
Create a supplier profile and upload products with complete specs: sensing principle, target gas/parameter, range, accuracy, output, and typical applications. Add datasheets and real photos to build trust. Listing is free — you can start here: “List Your Products (Free)”.
How are suppliers verified on SensorChina.org?
We encourage suppliers to provide clear company information (factory capability, certifications, product scope, and contact details). Profiles with complete data (catalog, datasheets, and real business contacts) are easier for buyers to evaluate and tend to rank higher inside the directory.
Do suppliers provide datasheets, calibration notes, and integration support?
Most professional manufacturers provide datasheets, recommended circuits, warm-up behavior, compensation suggestions, and calibration guidance. If you share your use case (alarm, HVAC monitor, IoT gateway, industrial transmitter), suppliers can recommend suitable sensor elements or ready-to-use modules.
Can I request quotes from multiple suppliers at once?
Yes. Send one RFQ with your key specs (target gas/parameter, range, output, quantity, application) and you can reach multiple relevant suppliers faster. For urgent projects, include your certification needs (e.g., CE/ATEX/IECEx) and delivery timeline.
Request a Quote / Tell Us Your Requirements
GETTING STARTED
Are You Ready? Get a Quote & Start Saving Right Now!
Get matched with suitable suppliers and receive replies within 24–48 hours.
- Multi-supplier matching for faster sourcing
- Clear spec template (gas, range, output, environment)
- Support for OEM/ODM and customization
- English-ready communication and global shipping experience
- Datasheet + selection guidance available
- Suitable for brands, integrators, and factories
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