I. Highlights HX205 series of environmental temperature and humidity monitor compatible configure two inlet temperature and humidity sensor digital signal input, to meet different temperature and humidity monitoring accuracy requirements. LED large screen display system with the support of MOD-BUS protocol can be widely applied to testing laboratories and other occasions of environmental temperature and humidity monitoring and control. Second, product introduction HX205 series of environmental temperature and humidity monitor is science and technology projects in Fujian Province Quality and Technical Supervision, "multifunction wireless ad hoc network of temperature and humidity detector research" (project number: FJQI2013048) research, the device accurately satisfy different monitoring of temperature and humidity requirements. The product has been widely applied to the Fujian Provincial Institute of Metrology research base and national steam flow meter product quality inspection center of all laboratory temperature and humidity monitoring and networking. Third, the major technical indicators 1, the monitor model is divided into two types, namely: HX205LED / S, HX205LED / R 2, the type of sensor are: Switzerland import sensor S series, the Swiss Import sensor R Series 3, signal input is: Digital Signal 4, two types of monitor relative humidity measurement range (0-100)% and an accuracy of ± 3.0% at 23 ℃; ± 0.8% at 23 ℃ 5, two types of monitors temperature measurement ranges is (-10 ~ 120) ℃, (- 50 ~ 100) ℃; ± 0.3 ℃ accuracy and ± 0.1 ℃ 6, the data communication is: MODBUS protocol specifications and additional product information, please visit: Fujian Straits Measurement Science and Technology Development Center understand, thank you.