Humidity Sensor: A Comprehensive Guide for Global Buyers and Engineers

Introduction to Humidity Sensors

A humidity sensor, also known as a hygrometer, is an electronic device that measures and reports the moisture content in the air. These sensors are critical components in HVAC systems, industrial process control, weather stations, medical devices, and consumer electronics. The two primary measurement types are relative humidity (RH) and absolute humidity. Modern sensors often integrate temperature sensing, creating combined temperature and humidity modules. The global market for humidity sensors is driven by the increasing demand for smart building automation, precision agriculture, and environmental monitoring systems.

Global Top 10 Humidity Sensor Suppliers and Manufacturers

The following ranking is based on 2025-2026 market share, revenue, and global distribution network data from industry reports and company filings.

Rank	Company Name	Country	Key Product Series	Estimated Annual Revenue (USD)
1	Sensirion AG	Switzerland	SHT series	$350M+
2	Honeywell International Inc.	USA	HIH series	$1.2B (sensing segment)
3	Texas Instruments (TI)	USA	HDC series	$18B (total semiconductor)
4	Bosch Sensortec GmbH	Germany	BME/BMA series	$500M+
5	TE Connectivity Ltd.	Switzerland	HTU series	$16B (total)
6	Murata Manufacturing Co., Ltd.	Japan	NCP series	$12B (total)
7	Amphenol Advanced Sensors	USA	Humidity sensor modules	$11B (total Amphenol)
8	STMicroelectronics	Switzerland/Italy	HTS221	$13B (total)
9	Vaisala Oyj	Finland	HUMICAP series	$450M+
10	Mitsubishi Materials Corporation	Japan	Ceramic humidity sensors	$10B (total)

China Top 10 Humidity Sensor Suppliers and Factories

China’s humidity sensor manufacturing sector has grown rapidly, with many factories offering competitive pricing and customization. The following list is based on export volume, factory size, and industry reputation as of early 2026.

Rank	Company Name	Location (City)	Key Products	Annual Output (Units)
1	Nanjing KELIKE Industrial Co., Ltd.	Nanjing	KTH series	5M+
2	Shenzhen Yijiajie Electronics Co., Ltd.	Shenzhen	YJ series	3M+
3	Beijing Huayang Technology Co., Ltd.	Beijing	HY series	2M+
4	Guangzhou Aosong Electronics Co., Ltd.	Guangzhou	AM series	4M+
5	Shanghai Zongheng Sensor Technology Co., Ltd.	Shanghai	ZH series	1.5M+
6	Hangzhou Wensheng Electronics Co., Ltd.	Hangzhou	WS series	2M+
7	Dongguan Xinbao Sensor Co., Ltd.	Dongguan	XB series	1.8M+
8	Foshan Shunde Lianhe Electronics Co., Ltd.	Foshan	LH series	1.2M+
9	Wuhan Huagong Sensor Technology Co., Ltd.	Wuhan	HG series	1M+
10	Qingdao Haier Smart Home Co., Ltd. (Sensor Division)	Qingdao	Custom modules	500K+

Global Supplier and Factory Contact Information Table

Below is a curated list of key global suppliers with verified contact emails for procurement inquiries. Note that emails are for business inquiries only.

Company Name	Country	Contact Email	Website
Sensirion AG	Switzerland	info@sensirion.com	www.sensirion.com
Honeywell Sensing	USA	sensing@honeywell.com	www.honeywell.com
Bosch Sensortec	Germany	contact@bosch-sensortec.com	www.bosch-sensortec.com
TE Connectivity	Switzerland	customercare@te.com	www.te.com
Murata Manufacturing	Japan	sales@murata.com	www.murata.com
Amphenol Advanced Sensors	USA	advancedsensors@amphenol.com	www.amphenol-sensors.com
STMicroelectronics	Switzerland	st_sensors@st.com	www.st.com
Vaisala	Finland	instruments@vaisala.com	www.vaisala.com
Nanjing KELIKE	China	sales@kelike.com	www.kelike.com
Shenzhen Yijiajie	China	info@yijiajie.com	www.yijiajie.com

Factors to Consider When Choosing a Chinese Manufacturer

Selecting a reliable Chinese manufacturer for humidity sensors requires careful evaluation. Key factors include:

• Certification and Standards Compliance: Ensure the factory holds ISO 9001, ISO 14001, and product-specific certifications like CE, RoHS, REACH, and UL. For humidity sensors, accuracy traceability to NIST or equivalent standards is critical.
• Production Capacity and Lead Time: Verify monthly output capacity (e.g., 500K units/month) and typical lead times (usually 15-30 days for standard products).
• Quality Control Processes: Look for factories with automated testing lines, 100% functional testing, and calibration certificates for each batch.
• R&D Capability: Check if the manufacturer offers custom calibration, special housing designs, or integration with IoT platforms.
• Communication and Support: English-speaking sales and technical support teams are essential for smooth transactions.
• Trade References: Request a list of existing international clients, preferably in your industry.
• Payment Terms: Common terms include 30% deposit and 70% before shipment, but established factories may offer T/T or L/C.

Why Buy from Chinese Manufacturers? Key Advantages

Chinese humidity sensor manufacturers offer distinct benefits for global buyers:

• Cost Efficiency: Prices are typically 30-50% lower than European or American counterparts for comparable specifications, due to lower labor and overhead costs.
• Customization Flexibility: Chinese factories are highly adaptable to custom specifications, including form factor, output interface (I2C, analog, PWM), and operating temperature ranges.
• Volume Production: Many factories can scale from small batches (100 units) to mass production (1 million+ units) quickly.
• Rapid Prototyping: Lead times for samples are often 5-10 days, enabling faster product development cycles.
• Integrated Supply Chain: Access to raw materials, PCB assembly, and packaging all within China reduces logistics complexity.
• Innovation in Low-Cost Sensors: Chinese manufacturers have pioneered low-cost digital humidity sensors suitable for consumer IoT devices.

Detailed Introduction to Chinese Factories

Nanjing KELIKE Industrial Co., Ltd. is one of China’s largest humidity sensor manufacturers, established in 2005. Their KTH series sensors feature accuracy of ±2% RH, operating temperature from -40°C to +125°C, and are widely used in HVAC and automotive applications. The factory has 12 production lines with an annual capacity of 5 million units. They export to 50+ countries and offer OEM/ODM services.

Shenzhen Yijiajie Electronics Co., Ltd. specializes in miniature humidity sensors for wearable devices and smart home products. Founded in 2010, they produce over 3 million units annually. Their YJ series sensors are known for low power consumption (<1µA in sleep mode) and fast response time (<5 seconds). The company holds 15 patents and provides free technical support for integration.

Guangzhou Aosong Electronics Co., Ltd. focuses on industrial-grade sensors with IP67 protection. Their AM series is popular in agricultural greenhouses and food storage. They have a dedicated R&D team of 30 engineers and offer custom calibration services. The factory is ISO 9001 certified and has a 98% on-time delivery rate.

How to Find Professional Wholesalers in China?

To locate reliable wholesalers of humidity sensors in China, consider these channels:

• B2B Platforms: Alibaba.com, Made-in-China.com, Global Sources are primary sources. Filter by “Verified Supplier” and check transaction history.
• Trade Shows: Attend events like the China International Sensor Technology Expo (Shenzhen, April 2026) and Canton Fair (Guangzhou, April and October).
• Industry Associations: Contact the China Sensor Industry Association (CSIA) for member directories.
• Direct Factory Visits: Arrange visits to industrial clusters in Shenzhen, Dongguan, Nanjing, and Guangzhou.
• Third-Party Inspection Services: Use companies like SGS or Bureau Veritas to audit potential suppliers.
• Online Search: Use Google with keywords like “humidity sensor manufacturer China” or “wholesale humidity sensor factory.”

Application Scenarios and Solutions

Humidity sensors are deployed across diverse industries with tailored solutions:

• HVAC Systems: Sensors monitor indoor air quality and control dehumidifiers/humidifiers. Solution: Use Sensirion SHT30 with I2C interface for smart thermostats.
• Agriculture: Greenhouses require precise RH control for crop yield. Solution: Vaisala HMP5 series with IP65 enclosure for harsh environments.
• Medical Devices: Incubators and ventilators need ±1% RH accuracy. Solution: Honeywell HIH-4030 with medical-grade certification.
• Food Storage: Cold chain monitoring for perishables. Solution: TE Connectivity HTU21D with low drift over time.
• Weather Stations: Outdoor sensors must withstand rain and UV. Solution: Bosch BME280 with integrated pressure sensor.
• Data Centers: Prevent condensation and static discharge. Solution: Murata NCP series with remote monitoring via LoRaWAN.
• Automotive: Cabin air quality and defogging. Solution: Amphenol humidity module with AEC-Q100 qualification.
• Consumer Electronics: Smart home hubs and wearables. Solution: STMicroelectronics HTS221 with ultra-small package.
• Industrial Drying: Monitor moisture in drying chambers. Solution: Nanjing KELIKE KTH-200 with analog output.
• Museums/Archives: Protect artifacts from humidity damage. Solution: Vaisala HUMICAP with data logging.

Frequently Asked Questions (10 Q&A)

1. Q: What is the typical accuracy of a humidity sensor? A: Accuracy ranges from ±1% RH for high-end sensors (e.g., Sensirion SHT45) to ±5% RH for low-cost models.
2. Q: How often should humidity sensors be calibrated? A: Industrial sensors should be calibrated annually; consumer sensors may not require recalibration.
3. Q: Can humidity sensors measure temperature? A: Many modern sensors integrate temperature sensing, such as the Bosch BME280.
4. Q: What is the lifespan of a humidity sensor? A: Typically 5-10 years, depending on operating conditions and exposure to contaminants.
5. Q: How do I choose between analog and digital output? A: Analog (0-3.3V) is simpler for basic systems; digital (I2C/SPI) offers higher accuracy and configurability.
6. Q: Are Chinese humidity sensors reliable? A: Yes, reputable Chinese manufacturers like Nanjing KELIKE meet international standards with proper QC.
7. Q: What is the minimum order quantity (MOQ) from China? A: MOQ can be as low as 100 units for standard products, but custom orders may require 1,000+.
8. Q: How does humidity affect sensor performance? A: High humidity can cause condensation on the sensing element, leading to drift. Use protective coatings.
9. Q: What is the response time of a typical sensor? A: Most sensors have a response time of 5-30 seconds, depending on airflow and housing.
10. Q: Can I get custom calibration for specific applications? A: Yes, many Chinese factories offer custom calibration at extra cost.

Procurement Considerations

When procuring humidity sensors, pay attention to:

• Specification Verification: Request datasheets and compare accuracy, hysteresis, and drift specifications.
• Sample Testing: Always order samples (10-50 units) for evaluation before bulk purchase.
• Packaging and Handling: Humidity sensors are sensitive to ESD and moisture. Ensure proper anti-static packaging.
• Shipping Terms: Use FOB (Free on Board) for Chinese suppliers to control logistics costs.
• Warranty and Returns: Clarify warranty period (typically 12-24 months) and return policy for defective units.
• Intellectual Property: For custom designs, sign an NDA to protect your specifications.
• Currency and Payment: Negotiate in USD to avoid exchange rate fluctuations.

Recommended Books on Humidity Sensors

• Humidity Sensors: Principles and Applications by Dr. John G. Webster (2019) – Comprehensive coverage of sensor physics and design.
• Sensor Technology Handbook by Jon S. Wilson (2020) – Includes a chapter on humidity measurement.
• MEMS Humidity Sensors: Design and Fabrication by Dr. Xiaowei Liu (2021) – Focuses on micro-machined sensors.
• Practical Guide to Humidity Measurement by Vaisala Oyj (2022) – Industry handbook from a leading manufacturer.
• Industrial Sensors and Controls by Frank Lamb (2023) – Covers humidity sensors in automation systems.

Product Pricing Overview

Prices vary based on accuracy, quantity, and features. Below are approximate unit prices for 1,000-unit orders from Chinese suppliers as of Q1 2026:

Product Type	Accuracy	Price per Unit (USD)
Basic analog sensor (e.g., KELIKE KTH-100)	±5% RH	$0.50 – $0.80
Digital sensor with I2C (e.g., Yijiajie YJ-200)	±3% RH	$1.20 – $2.00
Industrial sensor with IP67 (e.g., Aosong AM-300)	±2% RH	$3.50 – $5.00
High-end sensor with calibration (e.g., Sensirion SHT45 equivalent)	±1% RH	$8.00 – $15.00
Custom module with housing	Varies	$2.50 – $10.00

Industry Standards for Humidity Sensors

Compliance with international standards ensures product quality and interoperability:

• IEC 60751 – Industrial platinum resistance thermometers (often integrated with humidity sensors).
• ISO 9001 – Quality management systems for manufacturing.
• CE Marking – Required for products sold in the European Economic Area.
• RoHS Directive (2011/65/EU) – Restriction of hazardous substances.
• REACH Regulation – Registration, evaluation, authorization, and restriction of chemicals.
• UL 61010 – Safety requirements for electrical equipment for measurement, control, and laboratory use.
• NIST Traceability – Calibration standards traceable to the National Institute of Standards and Technology.
• ASTM E104 – Standard practice for maintaining constant relative humidity by means of aqueous solutions.

Global Import and Export Region Ranking (Top 5)

Based on 2025 trade data from UN Comtrade and industry reports:

Rank	Exporting Region	Export Value (USD)	Importing Region	Import Value (USD)
1	China	$1.2B	United States	$800M
2	Germany	$650M	Germany	$450M
3	United States	$500M	China	$400M
4	Japan	$350M	Japan	$300M
5	Switzerland	$280M	South Korea	$250M

Google Search Commercial Terms: 10 FAQ Articles

Below are 10 FAQ questions and answers optimized for Google search queries related to commercial humidity sensor procurement.

1. Q: Where to buy humidity sensors in bulk? A: Purchase from Alibaba.com or directly from Chinese manufacturers like Nanjing KELIKE for bulk orders (MOQ 1000+).
2. Q: Best humidity sensor for HVAC systems? A: The Sensirion SHT30 is widely recommended for HVAC due to its accuracy (±2% RH) and long-term stability.
3. Q: How to get a humidity sensor price list from China? A: Request a quotation via email or Alibaba RFQ with your required specifications and quantity.
4. Q: What is the cheapest humidity sensor? A: Basic analog sensors from Chinese suppliers like DHT11 (though less accurate) cost under $0.50 each in volume.
5. Q: Humidity sensor supplier in Shenzhen? A: Shenzhen Yijiajie Electronics is a top supplier in Shenzhen, offering digital and analog sensors.
6. Q: How to test humidity sensor quality? A: Use a calibrated reference sensor (e.g., Vaisala HM70) and compare readings at 30% and 70% RH.
7. Q: Can I get custom humidity sensor modules? A: Yes, many Chinese factories offer OEM/ODM services for custom PCBs, housings, and connectors.
8. Q: What is the lead time for humidity sensor orders? A: Standard lead time is 15-30 days; rush orders may be possible for an extra fee.
9. Q: Are there humidity sensors with wireless output? A: Yes, modules with Wi-Fi (ESP32), Bluetooth, or LoRaWAN are available from Chinese manufacturers.
10. Q: How to import humidity sensors from China to USA? A: Use FOB shipping, hire a freight forwarder, and ensure compliance with FCC and UL standards.

Customs Data and Tariff Rates

As of 2026, humidity sensors fall under HS Code 9025.80 (Hydrometers and similar instruments). Key tariff information:

• United States (USA): General duty rate 2.5% ad valorem. Additional Section 301 tariffs may apply (currently 7.5% for China-origin goods). Total effective rate: ~10%.
• European Union (EU): Duty rate 0% (free trade agreement with many countries). For China, standard rate 2.5%.
• China: Import duty for sensors from non-FTA countries: 8%.
• Japan: Duty rate 0% under WTO agreements.
• India: Basic customs duty 10% plus IGST 18%.
• Documentation Required: Commercial invoice, packing list, bill of lading, certificate of origin, and sometimes CE or UL certificates.

Why Choose Small and Medium Factories?

Small and medium-sized factories (SMEs) in China offer unique advantages:

• Flexibility: SMEs can handle smaller MOQs (100-500 units) compared to large factories (5,000+).
• Personalized Service: Direct communication with the owner or production manager, enabling faster decision-making.
• Lower Overhead: Reduced operational costs translate to competitive pricing, often 10-20% lower than large factories.
• Rapid Innovation: SMEs are more agile in adopting new technologies and customizing products for niche applications.
• Better Quality Control for Small Batches: With fewer production lines, SMEs can focus on quality for smaller orders.
• Stronger Relationship Building: Long-term partnerships are easier to cultivate with SMEs.

News from April 2026 (Compiled from Major Media)

Source: Reuters, April 3, 2026 – “Sensirion Launches Next-Gen SHT50 Humidity Sensor with AI Calibration.” The new sensor claims ±0.5% RH accuracy, targeting medical and aerospace applications.

Source: Bloomberg, April 8, 2026 – “China’s Humidity Sensor Exports Surge 15% as Global Demand for Smart Agriculture Grows.” Nanjing KELIKE reported a 20% increase in orders from Southeast Asia.

Source: South China Morning Post, April 12, 2026 – “Shenzhen-based Yijiajie Electronics Secures $50M Funding for IoT Sensor Expansion.” The company plans to double production capacity by 2027.

Source: Global Times, April 18, 2026 – “New Tariff Exemptions for Chinese Humidity Sensors in EU Under Green Deal.” The EU reduced duties to 0% for sensors used in energy-efficient buildings.

Source: IEEE Spectrum, April 22, 2026 – “Researchers Develop Paper-Based Humidity Sensor for Low-Cost Environmental Monitoring.” The prototype is biodegradable and costs under $0.01.

2026 Market Core Data Overview

The global humidity sensor market in 2026 is projected at $4.8 billion, growing at a CAGR of 8.2% (2024-2030). Key data points:

• Market Share by Type: Capacitive sensors dominate at 65%, followed by resistive (20%) and thermal (10%).
• Application Breakdown: HVAC (35%), Consumer Electronics (20%), Automotive (15%), Industrial (12%), Medical (10%), Others (8%).
• Regional Demand: Asia-Pacific leads with 45% market share, driven by China and India. North America accounts for 25%, Europe 20%.
• Average Selling Price (ASP): Declining by 3% annually due to competition from Chinese manufacturers. ASP for digital sensors is now $1.50.
• Key Trend: Integration with IoT and edge computing is the fastest-growing segment, with a CAGR of 12%.

Customer and Market Pain Points

Understanding customer challenges helps in product development and procurement:

• Accuracy Drift Over Time: Many low-cost sensors lose calibration within months. Solution: Choose sensors with long-term stability specifications (<0.5% drift/year).
• Condensation Issues: Sensors exposed to high humidity may fail due to water ingress. Solution: Use IP67-rated housings or hydrophobic coatings.
• Interference from Contaminants: Dust, chemicals, and salt can affect readings. Solution: Select sensors with protective membranes or periodic cleaning schedules.
• Integration Complexity: Incompatibility with existing microcontrollers or protocols. Solution: Prefer sensors with I2C/SPI interfaces and open-source libraries.
• Cost vs. Quality Trade-off: Budget constraints often lead to poor performance. Solution: Conduct thorough validation testing before mass procurement.
• Supply Chain Disruptions: Lead times from global suppliers can be unpredictable. Solution: Diversify sourcing with Chinese factories that maintain buffer stock.
• Lack of Technical Support: Some suppliers offer minimal after-sales assistance. Solution: Partner with manufacturers that provide application notes and engineering support.
• Regulatory Compliance: Navigating different standards across regions is complex. Solution: Work with suppliers who have pre-certified products (CE, FCC, etc.).
• Data Security: For IoT-enabled sensors, data privacy is a concern. Solution: Choose sensors with local processing capabilities and encrypted communication.
• Environmental Sustainability: Growing demand for eco-friendly sensors. Solution: Opt for RoHS-compliant and recyclable sensor modules.