Facebook
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift

High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift

No.006

The High Accuracy SHT21 humidity sensor provides precise digital measurements of temperature and humidity with low drift. Designed for reliable environmental monitoring, it is ideal for integration by a professional temperature sensor supplier.

  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift
  • High Accuracy SHT21 Humidity Sensor Temperature Moisture Sensor Low Drift

Description

Product Advantages


Structural and System Integration Excellence

The sensor module's design leverages the proven SHT21 sensing technology encapsulated within protective housings, including copper sintered and PE waterproof covers, enhancing durability across multiple environments. The fully digital output simplifies system integration, reducing noise susceptibility compared to analog alternatives. Its modular architecture enables OEM customization aligned with specific application requirements, reinforcing its suitability for temperature sensor custom projects. Additionally, the I2C and RS485 communication protocols ensure flexible, standardized interfacing for varied industrial automation platforms, supporting both compact embedded devices and extended network architectures.


Performance Reliability and Operational Usability

Operating with low power consumption at a modest 2.4–3.3 V DC enables seamless deployment in battery-powered or energy-sensitive devices, enhancing usability across distributed sensing arrays. The sensor's fast response time coupled with multi-point calibration and temperature compensation provides consistent, high-accuracy readouts that reduce calibration cycles and maintenance overhead. These attributes contribute to enhanced reliability and user confidence in environmental data integrity. By sourcing this sensor from a trusted temperature sensor supplier, enterprises benefit from established quality assurance and technical support, facilitating faster time-to-market and minimizing operational risks associated with sensor failures.


SHT21 Humidity Temperature Sensor
VOTESEN VTH Temperature and Humidity Sensor
VOTESEN VTH series SHT 21 digital temperature and humidity module adopts high precision SHT series sensor equipped with a high quality filter shell for large air permeability, fast gas humidity flow and exchange rate. The shell is is waterproof and will keep water from seeping into the body of the sensor and damaging it, but allows air to pass through so that it can measure the humidity (moisture) of the environment. It has been widely used in HVAC, consumer goods, weather stations, test & measurement, automation, medical, humidifiers, especially perform well in an extreme environment like acid, alkali, corrosion, high temperature and pressure.
VTH probe is equipped with a 10K pull-up resistor and a 1uF filter capacitor. The sensor is fully digital and multi-point
calibrated, with high accuracy, good consistency, long-term stability, low drift, and full temperature compensation for humidity.
The surface of the sensor is covered with a waterproof and breathable membrane to protect it, even if it is immersed in
electricity for a long time, it will not damage the sensor.
There are different types of probe to select and customize the sensor based on your working environment needs.
A. Copper Sintered Protective Cover Probe
The protective cover is nickel-plated after sintering copper particles, which has the characteristics of breathability, high temperature resistance, and corrosion resistance, which improves the life of the sensor. The wiring part uses an aviation plug for quick installation and removal.
B. PE Waterproof Protective Cover Probe
* Optional yellow hexagonal connector or silver round connector.
* The waterproof head material uses a polymer PE sintered filter element, which is waterproof and removes dust, and buffers high-speed flowing gas. The temperature and humidity measurement results are more stable and accurate. It is suitable for soil, outdoor rain, high temperature agricultural greenhouses surroundings.
Product Parameters
Sensor Brand
Sensirion (Switzerlandchip)
Sensor Model
SHT21
Supply Voltage
2.4 - 3.3 V DC
Accuracy
SHT20: Temperature ±0.3℃; Humidity ±3%RH
SHT21: Temperature ±0.3℃; Humidity ±2%RH
SHT25: Temperature ±0.2℃; Humidity ±1.8%RH
Working Environment Range
-40 - 125℃; 0%RH - 100%RH
Resolution
0.1℃; 0.1%RH
Protocol
Standard I2C Protocol / RS485
Cable Length
Default 100cm, or customize length
Wiring
Red: VCC, Black: GND, Yellow: SCL, Green: SDA
Probe
Metal probe with copper sintered filter/ PE

Use Scenarios


Precision Climate Control in HVAC Systems

Within commercial and industrial HVAC systems, maintaining optimal temperature and humidity levels is essential for occupant comfort, equipment safety, and energy efficiency. The High Accuracy SHT21 humidity sensor functions as a core element in monitoring ambient air conditions, providing precise and reliable data for automated feedback control loops. Its ability to withstand environmental variability and its digital communication protocols allow direct integration with building management systems. This capability ensures compliance with indoor air quality standards while enabling dynamic adjustment of heating, ventilation, and cooling loads based on real-time sensor input, reducing energy costs and optimizing resource use.


Environmental Monitoring in Agricultural and Greenhouse Operations

In agricultural biotechnology and greenhouse environments, controlled humidity and temperature are pivotal to crop health and yield optimization. The temperature and humidity sensor delivers accurate environmental parameters critical for irrigation control, ventilation management, and disease prevention strategies. Its waterproof, breathable membrane and optional protective covers enable deployment in humid, soil-contact, and outdoor conditions without sensor degradation. Integration with automated monitoring systems facilitates continuous data acquisition, supporting precision agriculture initiatives and helping growers comply with industry regulations and quality certification requirements. This sensor contributes significantly to advancing sustainable farming through precise environmental control.

Product FAQ

What types of protective covers are available for the SHT21 humidity sensor?

We offer two main probe options for the SHT21 humidity sensor: copper sintered protective covers and PE waterproof covers. These options allow you to customize the sensor for various environments like soil measurement, greenhouses, or outdoor installations, ensuring durability and accurate data in challenging conditions.


Can you customize the temperature and humidity sensor for specific industrial needs?

Yes, we provide OEM customization to tailor the temperature and humidity sensor to your project requirements. This includes adjustments in cable length, protective covers, and calibration. Our flexibility ensures the sensor fits applications from HVAC systems to industrial automation with exact technical specifications.


How is the SHT21 temperature sensor installed and integrated into monitoring systems?

Our temperature sensor uses a standard I2C communication protocol, with RS485 as an option for integration into most environmental monitoring systems. Installation involves simple wiring (VCC, GND, SCL, SDA) and power supply ranging from 2.4 to 3.3 V DC, enabling straightforward connection with controllers or data loggers.


What warranty and after-sales support do you provide for your sensors?

We back our sensors with a one-year warranty covering any quality issues. Our after-sales service includes technical assistance and solutions tailored to your sensor's operation. Whether you require support for temperature and humidity sensors or custom units, our team is committed to ensuring stable, long-lasting performance.

Company Profile & Certifications
About Us
XI'AN VOTESEN ELECTRONIC TECHNOLOGY CO.,LTD located in XI'AN CITY, one of the three major sensor industry based in China. We have more than 10 years experience in sensor industry. We are not only the product manufactory, but also a professional technical support team which we can accommodate customer various requirements. We also accept OEM/ODM production order.
Votesen is committed to produce high-quality sensor and measurement instruments. Our mature and advanced production technology ensure your project safety, stable and long lasting operation. Our ultimate goal is to control product quality by ensuring all products meet the standard quality. Our products have been sold to over 40 countries like Australia, USA, Canada, Mexico, Netherland, Germany, Russia, Poland, Korea, India etc.
With Votesen, you will always harvest the best price, passion service and professional guidance. We supply 7*24hours professional service and your satisfaction is always our priority.
Product Packaging & Shipping

Download

Leave a message
Company Name
Contact Name
Country
Email
Whatsapp/Phone
Message*
Verification Code*
Verification Code