The main function of the TD301D485H-A/TD501D485H-A series is to convert a logic level signal intoisolated RS485 differential level signals. The special integrated IC technology of the RS485 transceiverachieves isolation between the power supply and the signal lines isolation, does RS485communication and protects the bus all in one and the same module. The product's isolated powersupply withstands a test voltage of up to 2500VDC, in addition, the product features an automaticswitching function, that no longer reguires the need to pass through the node to send and receivecontrol signals, which to a certain extent, reduces the design complexity. Also, they can easily beembedded in the user's end eauipment, to achieve fully functional RS485 network connections.