The AQ3485 network type temperature and humidity integrated transmitter adopts high-quality digital integrated sensors AM2302 as the probe, equipped with reliable digital processing circuits, so as to convert the temperature and humidity in the environment of -40℃~80℃ into the corresponding standard MOBUS RS-485 signal, which can be reliably collected and monitored by the upper computer system. It has the characteristics of small size, light weight, wide range, high accuracy, fast response speed and good long-term working stability, which makes it widely used in meteorology, national defense, scientific research, post and telecommunications, chemical industry, environmental protection, medicine, hotels, grain and other material warehouses, air conditioning and other fields that need to measure and control temperature and humidity in the air.
The AQ3485 is a network‑type temperature and humidity transmitter that uses a high‑quality digital sensor (AM2302) and a reliable microcontroller circuit to convert environmental data into standard RS‑485 signals. It is compact, lightweight, and suited for a wide range of applications such as meteorology, environmental monitoring, and HVAC.
The manual provides a product overview, mechanical dimensions, wiring diagrams, technical specifications, configuration steps for address and baud‑rate settings, data acquisition instructions, and a troubleshooting guide. It also includes command formats for data exchange with a host PC. This manual is written in Chinese.
| Humidity measurement range | 0 % RH ~ 100 % RH |
|---|---|
| Temperature accuracy | ±0.03 °C |
| Temperature stability | ±0.02 °C (≥3 years) |
Use the eight‑bit dip‑switch on the PCB to select the desired address as shown in the address‑setting table.
Divide the returned value by 10; the result gives the temperature in °C or humidity in % RH.
Connect the transmitter to the PC using an RS‑232 to RS‑485 converter according to the wiring diagram.