The main function of the TD501M485 / TD301M485 series is to convert a logic level signal into isolatedRS485 differential level signals. The special integrated IC technology of the RS485 transceiver achievesisolation between the power supply and the signal lines isolation, does RS485 communication andprotects the bus all in one and the same module. The product's isolated power supply withstands a testvoltage of up to 2500VDC. in addition, the product features an automatic switching function, that nolonger requires the need to pass through the node to send and receive control signals, which to a certainextent, reduces the design complexity. Also, they can easily be embedded in the user's end equipment, toachieve fully functional RS485 network connections.