• Xian Votesen Electronic Technology Co., Ltd.
    w***Nel, US
    I worked with Jack Yin, he was extremely helpful, willing to accommodate all my customizations and provided an excellent quality product. Thanks Jack, will work with you and Votesen again.
  • Xian Votesen Electronic Technology Co., Ltd.
    Very trustful supplier!
  • Xian Votesen Electronic Technology Co., Ltd.
    Great product. Good delivery time. Now my project is on course!
Contact Person : Mike Su
Phone Number : +8617782470268
WhatsApp : +8617782470268

4-20mA HVAC Duct Temperature Sensor For Building Management CE Certificate

Place of Origin China
Brand Name VOTESEN
Certification CE, ROHS
Model Number VTH300-T
Minimum Order Quantity 3
Price Negotiable Price
Packaging Details Carton
Delivery Time 7-25 working days
Payment Terms T/T
Supply Ability 35000pcs per day
Product Details
Sensor Chip Original Sensirion SHT30 SHT31 SHT35 (Customizable) Output 4-20mA (Customizable)
Application HVAC, Environmental Monitoring For Building, Ventilation Control Power Supply DC10-30V
Humidity Measurement Range 0%RH~100%RH Temperature Measurement Range -40℃~+80℃
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20mA HVAC Duct Temperature Sensor


CE HVAC Duct Temperature Sensor


HVAC 20mA duct type temperature sensor

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Product Description

4-20mA Duct Humidity Temperature Sensor for HVAC Building Management

The Duct Type Humidity Temperature Transmitter measures temperature and relative humidity in air ducts. The probe filter at the bottom of the duct temperature and humidity sensor is made of 25um high-strength stainless steel material, which can not only ensure the entry of gas molecules but also prevent the entry of dust particles and water droplets. The pipeline installation method is convenient for on-site installation. It adopts anti-interference circuit design and can withstand various strong electromagnetic inter preferences such as on-site inverse. Besides, the equipment adopts waterproof casing design. Pipeline humidity and temperature transmitter for the long distance transmission, using 4-20mA industrial universal interface, direct access to a variety of display devices, to achieve humidity and temperature monitoring.


This duct sensor is designed and developed specifically for HVAC systems. It has the characteristics of high accuracy and low cost. It is an ideal instrument for measuring the relative humidity and temperature of the air. It can provide customers with reliable temperature and humidity measurement solutions. This design shell reduces the installation cost to the greatest extent, reduces the workload on site, and improves the product's anti-pollution and anti-condensation performance, so as to ensure that the error is minimized during the work process.


Moreover, the flange plate of this sensor is equipped with a high-quality silicone sealing ring, which can ensure the sealing between the equipment and the exhaust pipe during installation, greatly reduce the outflow of gas in the exhaust pipe, and ensure accuracy of data measurement to the greatest extent. The top of the duct temperature sensor can be equipped with a high-brightness color LED display to ensure that the displayed value can be seen clearly in a dim place. Therefore, if you require to view the reading at the device, you can customize this sensor with display.


Power Supply 10~30V DC
Maximum Power Consumption 4-20mA 1.2W
Accuracy Temperature ±0.5℃ (25℃)
Humidity ±3%RH (60%RH,25℃)
Transmitter Operating Temperature -20℃~+60℃, 0%RH~80%RH
Probe Temperature Measurement Range -40℃~+60℃
Probe Humidity Measurement Range 0%RH~100%RH
Long-term Stability Temperature ≤0.1℃/y
Humidity ≤1%RH/y
Response Time Temperature ≤25s
Humidity ≤8s
Output Signal 4-20mA


4-20mA HVAC Duct Temperature Sensor For Building Management CE Certificate 0



4-20mA HVAC Duct Temperature Sensor For Building Management CE Certificate 1


★ Anti-interference device.

★ Wide voltage power supply range.

★ Durable and dust proof.

★ Flange fitting, easy installation.

★ High quality silicone sealing ring, good sealing between equipment and exhaust duct.

★ Control HVAC system to improve comfort and energy saving.

★ Original Sensirion SHT humidity temperature chip.




★ Air conditioning

★ Environmental ventilation control

★ Environmental monitoring for building

★ Factory

★ Lab

★ Agriculture

★ Food industry

★ Drying technology

★ Building automation

★ Industrial

★ Storage room



To customize the most suitable humidity temperature transmitter for your application, kindly let us know your requirements:

1. SHT Sensor Chip:

2. Output:

3. Order Quantity: