The FOXBORO P0903ZE analog input module is an intelligent module used to collect analog signals. It can collect analog signals from remote sites to the computer. It uses the RS-485 bus as a data communication line to provide analog to 485 functions. It can simultaneously input analog values ​​to the module and transmit them to the computer through the RS-485 bus. The communication protocol of the FOXBORO P0903ZE analog input module adopts the MODBUS RTU protocol, which achieves unified docking with industrial field data collection and is also very convenient to program. The FOXBORO P0903ZE analog input module has a wide range of application scenarios, mainly including the following aspects: Building automation system: used for various analog parameters in the system, such as temperature, humidity, pressure, flow, etc. Intelligent transportation system: used to monitor the working status of traffic lights, vehicle flow, road conditions and other information to achieve intelligent traffic management and dispatch.