DFU (Data Forward Unit) RHF3M485 is a transparent transmission device from high isolation RS485 and RS232 to LoRaWAN transceiver. The DFU RHF3M485 includes a high isolation RS485 transceiver which make it could be used in complex industrial environment. And a LoRaWAN transceiver is integrated which support global LoRaWAN protocol, like CN470, EU433, EU868, US915, AS923, AU915, KR920 and so on. Furthermore, with its automatic packet segment function, automatic packet assembly function and packet buffer function, customer could insert this device and deploy it in the already existed system easily and quickly. This will help customer to update the traditional wired system to the smart wireless LoRaWAN system. The application of DFU RHF3M485 is targeted to industrial automatic equipment, industrial control, smart meter, smart home and all the update from traditional wired RS485 device to wireless LoRaWAN transceiver.