SW485A 3ONEDATA RS232 to RS485



Industrial-grade RS232 to RS485 Converter, 600W surge protection, 15KV ESD protection, Support -40~80°C wide operating temperature


Prezzo per pezzo

€ 20,81

(IVA esclusa)

€ 25,39 (IVA inclusa)

Prezzo di 1 pz. iva (22%) inclusa: € 25,39

Disponibilità: 15 gg lav


SKU: 119631

Model: SW485A

Bisogno di aiuto?


SW485A is an industrial-grade pocket RS-232 to RS-485 interface converter with high sensitivity, which can implement bidirectional data conversion between serial port RS-232 and RS-485 and need no external power supply. It provides a RS-232 and a RS-485 serial port equipped with 600W surge protection and 15kV electrostatic protection, which can effectively prevent device from being damaged.
The RS-232 port of SW485A adopts hole-type DB9 interface, which could connect to PC directly and obtain power from PC serial port via TXD, RTS and DTR signal line. SW485A can obtain enough power from those data/handshake signals regardless of whether the signal is high or low.
The design index of SW485A fully complies with the requirements of industrial standard. It’s receiving sensibility ranks top among its kind, which particularly suits for industrial system with requirement in fast collecting speed and large amount of data.


  • Support bidirectional data conversion between 1 RS-232 serial port and 1 RS-485 serial port
  • Serial port has high sensitivity of receiving
  • Unique port-power technology, no need for external power supply
  • Low power consumption, equal to that of normal light-emitting diodes in static operation, can be truly called passive
  • Automatic serial port signal rate detection , zero-delay automatic forwarding
  • Serial port provides 600W surge protection and 15kV electrostatic protection
  • Support -40~80℃ wide operating temperature range


Serial Port

Standard: EIA RS-232C, RS-485
Serial port quantity: 1 RS-232 serial port, 1 RS-485 serial port
RS-232 signal: TXD, RXD, GND
RS-485 signal: D+, D-, GND
Interface type: RS-232 serial port, adopts DB9, Female;
RS-485 serial port, adopts 4-pin 5.08mm pitch terminal blocks
Transmission distance: RS-232 serial port, 15m;
RS-485 serial port, 1200m
Direction control: RS-485 adopts automatic data flow control technology which can detect and control data transmission direction automatically
Load capacity: RS-485 supports 32-point polling environment (128-point could be customized)
Interface protection: 600W surge protection, 15kV electrostatic protection

Power Requirement

No power supply;
Obtain power from TXD, RTS, DTR signals of RS-232 serial port

Power Consumption

Static power consumption: ≤10mA
Dynamic power consumption(mean): ≤40mA

Environmental Limit

Operating temperature: -40~80℃
Storage temperature: -40~85℃
Relative humidity: 5%~95%(no condensation)

Physical Characteristic

Housing: plastic
Dimension (W x H x D): 71mm×33mm×16.5mm
Weight: 30g




3 years

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