Hxchen RS232 to RS485 Serial Communication Data Converter Adapter with a Terminal Board - 2 Pcs

Features: 1. Work environment: 0 to 7O degree centigrade (485-A),-50~58degree centigrade (485-C). 2. Passive Converter: Supports baud rates up to 115.2 Kbps; Automatic sense serial signal rate. 3. The converter can convert the TXD and RXD signals of the RS-232 serial port to the two wire balanced half duplex RS-485 signal. No external power supply, can be directly from the 3 foot stealing RS-232 port, at the same time by 7 feet (RTS), request to send pin 4 data terminal ready (DTR) to the converter auxiliary power supply, automatic control so that you do not have to re set, hardware and installation is very simple to use. 4.Bidirectional interface between RS-232 and RS-485 converter for use between the main control machine, the point-to-point form between the main control and single chip computer or peripheral, point to multipoint remote multi computer communication network, the realization of multi machine communication response, widely used in industrial automation control system, smart card, access control system, parking lot system, self-help the banking system, the bus fee system, canteen canteen system, employee attendance management system, highway toll station system etc.. Product description: Signals: RS-232: DCD(1) RXD(2) TXD(3) DTR(4) 5GND(5) DSR(6) RTS(7) CTS(8) RI(9) DB9 Male connector: D-/B(1) D+/A(2) ---(3) ---(4) GND(5) + 5v~ + 12v(6) ---(7) ---(8) ---(9)