UTEK UT-201B RS232 to RS485 Converter COM DB9 Industrial-grade Two-way Transmission 1.2KM Communication Protocol No Need Power

UTEK UT-201B RS232 to RS485 Converter COM DB9 Industrial-grade Two-way Transmission 1.2KM Communication Protocol No Need Power
1.
Interface feature: RS-232C, RS-485 standard interface compatible with EIA TIA
2.
Electric interface: RS-232 end DB9 hole connector RS-485 end DB9 needle connector with connection pole.
3.
Working mode: asynchronism half-duplex (RS-485)
4.
Transmission media: twisted -pair or STP
5.
Transmission rate: 300- 115.2KBPS
6.
External discharge dimension: 63mm * 33mm * 17mm
7.
Working circumstance: - 25 to 70 degree C, relative humidity 5%to95%
8.
Transmission distance: 1, 200m(RS-485 end) 5m(RS-232 end)
9.
Operating system: DOS/WIN95/WIN98/WIN2000/NI/XP/Linux and so on
10. Applies to all communication software, plug and pay
11. Max 32 pieces face devices can connect
12.
Power: Unique serial port charge pump driving technology, no need external power, real 3 wire communication (TXD, RXD, GND), no need initialize serial port
13. Auto send/receive data, without external flow control signal (RTS) 14. serial port rs232 UT-201 interface supports 2 communication modes as below:
1. Point-to-point 2 wires half-duplex