The main function of the TD301D485 / TD501D485 series is to convert a logic level signal into isolatedRS485 differential level signals. The special integrated lC 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. Also, they can easily be embedded in the user'send equipment, to achieve fully functional RS485 network connections.