1.In order to communicate betwwen various standard seriers ports of computers,external equipments,or intelligent instruments,we must convert these signals first.This converter is compatible with RS-232C and RS-485 standard.

2.It is able to convert RS-232 and RS-485 balanced differential signal and extend the communication distance to 1.2km.

3.It is passive and doesn't require external power.It uses a particular pump to gain power from RS-232 signals(RTS,DTR,TXD）without initializing the RS-232 series interface.An internal transceiver and paricular circuit automatically controls the data stream direction instead of handshake signals(such as RTS,DTR,etc.).

4.When works in RS-232 half-duplex mode,the software keeps the same function under RS-485 without any change.The transmission rate of 300-115200bps is capable of applying between host computers,host computer and its external equipments and forms point to point,point to multi-points network.

5.It is widely used in industrial dutomation,door safe,all-in-one-card,car parking,ATM,bus charge,eatery sell out,staff attendace management,and highway toll gate etc.