Technical parameters: 
 ※ Power: DC 7 ~ 24V 
 ※ Output signal: 
 Temperature: 0 ~ 20mA (or 0 ~ 2V) corresponding to -30 ℃ ~ 70 ℃ 
 Temperature accuracy: ± 0.2 ℃ 
 Humidity: 0 ~ 20mA (or 0 ~ 2V) corresponds to 0 to 100% 
 Humidity Accuracy: ± 5% 
 Functions and features: 
 ※ appearance for the two (small shell / radiation shield) 
 ※ small exterior size design, easy installation 
 ※ fast response 
 ※ anti-interference ability 
 ※ long life 
 ※ full calibration of the output, can be used interchangeably without calibration 
 ※ on-demand measurement, very low power consumption, good stability 
 Scope: 
 ※ widely used in agriculture, forestry, meteorology and other industries as well as climate rooms, storage and other places. 
 Basic principles: 
 ※ This product is the use of a highly integrated temperature and humidity sensor chip, chip, full-scale calibration of the digital output. 
 It uses patented CMOSens technology, to ensure that products with high reliability and excellent long-term stability. Sensor includes a capacitive polymer humidity sensor and a bandgap materials with temperature-sensitive components, the two sensitive components and a 14-bit A / D converter and a serial interface circuit on the same chip, the above . 
 The sensor high-quality, fast response, anti-interference ability, high cost. Each sensor chip in a very precise calibration of the temperature chamber to mirror condensing dew point as a reference. Calibration coefficients obtained by calibration to the program stored in the OTP memory chip itself. By two-wire serial interface and internal voltage regulation, so that the external system integration quick and easy.