HG803 series
Wall-Mounted Current Type
Air, Gas
LED
Site Display
±0.3ºC
CE
Customized
Hg803 Temperature and Humidity Transmitter
4-20mA/0-5V/0-10V+RS485 Modbus or RS485 Modbus
- 40~80ºC/- 40~120ºC/-20~60ºC
0-100%Rh
±0.3ºC(25ºC)
±3%Rh (60%Rh ,25ºC)
High Precision and Sensitivity, Waterproof
Industrial Automation
Flat/Cone, Male/Female Thread
Can Be Customized
-20~60ºC, 0~95%Rh
About 1.2W
HENGKO
Guangdong, China
9025800090
Product Description
HG803 4-20mA 0-5V 0-10V RS485 Modbus-RTU
Humidity and Temperature Transmitter
Humidity and Temperature Transmitter


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Multiple probe types are suitable for different application areas including computer room, warehouse, building, green house, precision workshop, etc.
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It adopts standard industrial interface 4~20mA\0-5V\0-10V analog or RS485 digital signal output, can access on site digital display meter,PLC,frequency converter,industrial control host and other equipment. It is safe,reliable and easy to install with small size and elegant outlook.
Click the link to get the catalogue!
HG803 temperature and humidity transmitter | ||
DC power supply | 10 ~ 30V DC (12V power supply recommended) | |
Measuring range option | Temperature | - 20ºC~60ºC;- 40ºC~80ºC ;- 40ºC ~ 100ºC;-40ºC~120ºC |
Humidity | 0%RH - 100%RH | |
Typical accuracy | Temperature | ±0.3ºC(25ºC), ( Higher precision can be customized) |
Humidity | ±3%RH (60%RH ,25ºC), ( Higher precision can be customized) | |
Maximum power consumption | Current output | About 1.2W |
Voltage output | About 1.2W | |
Measuring medium | Air, Gas | |
Long-term stability | Temperature | ≤ 0.1ºC /y |
Humidity | ≤ 1%RH /y | |
Response time | Humidity | ≤ 8s (1m/s wind speed) |
Temperature | ≤ 15s (1m/s wind speed) | |
Output signal option | RS485 MODBUS-RTU / RS485 MODBUS-RTU + 4-20mA/0-5V/0-10V | |
Baud rate | 1200,2400,4800,9600,19200,115200 settable,Default 9600pbs | |
Load capacity | Load for current output | ≤ 600Ω |
Load for voltage output | ≤ 250Ω | |
Transmitter circuit operating temperature | - 20ºC ~ +60ºC,0%RH ~ 95%RH( non-condensation ) |
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HENGKO Technology Co., Ltd., established in 2001, is professional manufacturer engaged in the research, development, production, sale and service of temperature and humidity devices and porous metal products. Our product range includes sintered metal filter, temperature and humidity sensor,temperature and humidity transmitter, temperature and humidity controller, dew point sensor, humidity meter, data logger, air diffuser and sensor housing. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always available to discuss customers' requirements and ensure full customer satisfaction. We look forward to forming a stable and extensive strategic partnership with friends from all walks of life and create a better future together.

Q: Are you a manufacturer or a trading company?
-- We are manufacturers.
Q: How long is the lead time?
B: Normally 7-10 working days, because we have the ability to stock the goods. For large orders, it takes about 10-15 business days.
Q: What is your MOQ?
-- The MOQ is 1 item.
Q: What are the payment options?
-- Western Union, Paypal, T/T, credit cards, online bank transfers, RMB, etc.
Q: Can it be customized?
-- Yes, you provide the measurement range you need, we customize according to your needs.
Q: What markets have you sold to?
-- We have shipped to Europe, Middle East, Asia, South America, Africa, North America, etc.
Q: What are the common uses of temperature and humidity sensors?
A: Temperature and humidity sensors are one of the most commonly used environmental sensors. It is widely used to provide the actual humidity status of the air at any given point or at any given location. Such equipment is usually used in situations where the air conditions are extremely bad or where the air conditions need to be controlled for various reasons.
-- We are manufacturers.
Q: How long is the lead time?
B: Normally 7-10 working days, because we have the ability to stock the goods. For large orders, it takes about 10-15 business days.
Q: What is your MOQ?
-- The MOQ is 1 item.
Q: What are the payment options?
-- Western Union, Paypal, T/T, credit cards, online bank transfers, RMB, etc.
Q: Can it be customized?
-- Yes, you provide the measurement range you need, we customize according to your needs.
Q: What markets have you sold to?
-- We have shipped to Europe, Middle East, Asia, South America, Africa, North America, etc.
Q: What are the common uses of temperature and humidity sensors?
A: Temperature and humidity sensors are one of the most commonly used environmental sensors. It is widely used to provide the actual humidity status of the air at any given point or at any given location. Such equipment is usually used in situations where the air conditions are extremely bad or where the air conditions need to be controlled for various reasons.
Q: Why is Temperature and Humidity Sensor important in some of the industries?
A: Humidity is the presence of water within the air. Measuring humidity within the environment can be critical due to the fact that the higher the humidity, the warmer it may seem. In industries, humidity measurement is often important because it can affect the health and safety of personnel as well as the cost of the product. As a result, temperature and humidity sensors are often quite important.
Q: How do I choose a suitable Temperature and Humidity Sensor?
A: There are a some important specifications you might need to consider when you choosing this product.
This includes:
* Accuracy
* Long-term stability
* Ability to recover from condensation
* Resistance to physical and chemical contaminants
*Interchangeability
* Repeatability
A: Humidity is the presence of water within the air. Measuring humidity within the environment can be critical due to the fact that the higher the humidity, the warmer it may seem. In industries, humidity measurement is often important because it can affect the health and safety of personnel as well as the cost of the product. As a result, temperature and humidity sensors are often quite important.
Q: How do I choose a suitable Temperature and Humidity Sensor?
A: There are a some important specifications you might need to consider when you choosing this product.
This includes:
* Accuracy
* Long-term stability
* Ability to recover from condensation
* Resistance to physical and chemical contaminants
*Interchangeability
* Repeatability