The company has more than ten years of development history, has been engaged in the development and manufacturing of UltraSonic Anemometer Wind Meter, Personal weather station, weather monitoring instruments for Precision Farming , and has a group of highly skilled and experienced technicians who can adjust according to the needs and changes of the market. All our employees unify their wills and actions to seek the development of the company and create a great career together. Our corporate culture: achievement industry height, create service value! Our corporate vision: to be a leader in the same industry.

WORKING PRINCIPLE:

The sensor adopts the imported SHT11 chip and the imported sensor module ms5540c. The module includes a temperature sensing element, a humidity sensing element, a piezoelectric resistance pressure sensing element and an ADC interface IC. It has a wide range and strong anti-static ability. They are converted into digital Modbus protocol output through the change of environment parameters (see Appendix 1).

TECHNICAL SPECIFICATION

Item	Specification
Measuring range	Temperature:-40-60℃ Humidity: 0-100%RH Pressure: 100-1100hPa
Accuracy	Temperature:≦±0.3℃(@25℃,typical) Humidity: ≦±3%RH(@25℃,20%-80%RH,typical) Pressure: Digital output 16 bits
Resolution	Temperature:0.01℃ Humidity: 0.05%RH Pressure: 0.1 hPa
Working Voltage	9V～24V(12V)
Work Current	DC12V <20ma
Power Consumption	DC12V <0.24W
Output	RS485(Modbus)
Ingress Protection	IP65
Work Environment	Temperature -40℃～60℃ Humidity：< 100%RH

INSTALLATION & USAGE：

●Selection of installation location. This product can be installed indoors or outdoors, and far away from high-power electrical equipment to prevent interference.

●Welding of output cable. The temperature and humidity sensor is equipped with a four core cable. The user can match the cable with appropriate length as required. The cable specification is 0.2mm² Four core shielded cable, and the wiring color is defined as below：

Digital output
Red	Positive pole
Black	Negative pole
Yellow	A
Blue	B

●After the product is fixed on the mounting rack or indoor wall, test whether the data collection is normal. If not, check whether the cable plug is well connected.

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Thanks to our rich experience and excellent production technology, we are confident that our OEM Factory Price Air Temperature and Relative Humidity Sensor Transmitter can win the trust of our customers. Our company does not rashly break into the international market, but follows the most basic business principles and seriously builds our own business activities. Our company is constantly enhancing the innovation ability and market adaptability of enterprises.

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OEM Factory Price Air Temperature and Relative Humidity Sensor Transmitter