RS232 TO RS485 Converter,Commercial Version,No Powers

UT-2201 interface supports 2 communication modes as below:
1. -to- 2 wires half-duplex
2. -to-multipoint 2 wires half-duplex
When converter works under half-duplex connection, it needs to install a matching resistance (data 120 ohm1/4W) for preventing signal reflection and interference.
UT-2201 half-duplex communication between interface converter

1. Interface feature: -232C, -485 standard interface compatible with EIA
2. Electric interface: -232 end DB9 hole connector -485 end DB9 needle connector with connection .
3. Working mode: asynchronism half-duplex (-485)
4. Transmission media: twisted -pair or STP
5. Transmission rate: 300-115.2KBPS
6. External discharge dimension: 63mm x 33mm x 17mm
7. Working circumstance: - 25 to 70 degree C, relative humidity 5%to95%
8. Transmission distance: 1,200m(-485 end) 5m(-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
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 control signal ()
14. serial port rs232
material: plastic
Color as shown

Package Contents:
1 x RS232 TO RS485 Converter

Only the above package content, other products are not included.
Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.