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Product Details


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Isolated RS-232 to RS-485 Converter

Product Availability:   AGAINST PO, WITHIN 3-4 WEEKS
  • 2-way 2500 VDC Isolation Protection
  • ESD Protection for RS-485 Data Line
  • Power Input, +10 ~ +30 VDC
  • Low power consumption
  • Long-cable application
  • Power and data fl ow indicator for troubleshooting
  • Easy-to-use rotary switch for baud rate setting, 1200 ~
  • 115200 bps
  • Operating Temperatures, -25 °C ~ +75 °C
  • Tiny packaging fi ts on your DIN-Rail

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MODEL   tm-7520U
Input RS-232 TxD, RxD, GND
Output RS-485 Data+, Data-
Transfer Distance  
Max. 1,200 m at 9.6 kbps; Max. 400 m at 115.2 kbps
(Belden 9841 2P twisted-pair cable, if different cables are used, the transmission distance may change)
2500 VDC Isolated Protection   Yes
Connection   Removable 4-Pin Terminal Block x 1; 9-Pin Female D-Sub x 1
Speed   300 ~ 115200 bps
ESD Protection   Yes
3000 VDCIsolated Voltage   On RS-232 side
Connection RS-232 9-Pin Female D-Sub
  RS-422/485 Removable 10-Pin Terminal Block
LED Indicators Power/Communication Yes
Power Input Voltage Range +10 VDC ~ +30 VDC (Non-isolated)
  Power Consumption 0.5W
Mechanical Dimensions 
(W x H x D)
52 mm x 92 mm x 27 mm
  Installation DIN-Rail
Environment Operating Temperature -25 °C ~ +75 °C
  Storage Temperature -30 °C ~ +75 °C
  Humidity 10 ~ 90% RH, non-condensing