# RS232 RS485 Repeaters

# Data Sheet

## RS232 RS485 Repeaters (R01 - R04)

<table border="1" id="bkmrk-r01-r02-r03-r04-feat" style="border-collapse: collapse; width: 100%; height: 248.156px;"><colgroup><col style="width: 50%;"></col><col style="width: 50%;"></col></colgroup><tbody><tr style="height: 248.156px;"><td style="height: 248.156px;">**R01 R02 R03 R04**

**[![image (4).webp](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/image-4.webp)](https://doc.redisage.com/uploads/images/gallery/2024-04/image-4.webp)**

</td><td style="height: 248.156px;">**Features**

- Automatic RS485 direction control
- ESD protection for the RS232/485 data line
- Power supply: +12 to +30 VDC or 24 VAC
- 3000 VDC isolation protection on the RS485 side
- Transmission speed up to 115200 bps
- Tx, Rx and power LED indicators
- RS485 embedded termination 120 ohm
- Operating temperatures: -40°C to +75°C
- DIN-rail mounting
- Compact size - single module format (1M)
- Dimensions: 90x56.4x17.5 mm
- 3 years warranty
- Customization of OEM is welcomed

</td></tr></tbody></table>

### Introduction

The R01 provides 3-way optical isolation between both RS485 sides and power supply. It can also be used as a repeater to extend the transmission of an existing network. Additionally, an RS485 system can be expanded beyond the 256 nodes limitation imposed by the standard.

The R02 is exactly the same as the R01, except for the isolation range. The R02 has one RS485 side isolation.

The R03 separator module provides a complete full-duplex, 3-way electrical isolation channel between two RS232 devices. This isolation is an important consideration if a system uses different power sources, has noisy signals or must operate at different ground potentials.

The R04 is exactly the same as the R03, except for the isolation range. The R04 has one RS232 side isolation.

### Specifications

<table border="1" id="bkmrk-redisage-pn-r01-r02-" style="border-collapse: collapse; width: 100%; height: 739.766px;"><colgroup><col style="width: 16.6865%;"></col><col style="width: 16.6865%;"></col><col style="width: 16.6865%;"></col><col style="width: 16.6865%;"></col><col style="width: 16.6865%;"></col><col style="width: 16.6865%;"></col><col style="width: 0.0018623%;"></col><col style="width: 0.0018623%;"></col></colgroup><thead><tr style="height: 35.3906px;"><td class="confluenceTh align-center" colspan="2" style="height: 35.3906px;">**Redisage PN**  
</td><td class="confluenceTh align-center" style="height: 35.3906px;">**R01**

</td><td class="confluenceTh align-center" style="height: 35.3906px;">**R02**

</td><td class="confluenceTh align-center" style="height: 35.3906px;">**R03**

</td><td class="confluenceTh align-center" style="height: 35.3906px;">**R04**

</td><td>  
</td><td>  
</td></tr></thead><tbody><tr style="height: 29.7969px;"><td class="confluenceTd" colspan="2" style="height: 29.7969px;">Repeater ports</td><td class="confluenceTd align-center" colspan="2" style="height: 29.7969px;">2 x RS485</td><td class="confluenceTd align-center" colspan="2" style="height: 29.7969px;">2 x RS232</td><td>  
</td><td>  
</td></tr><tr style="height: 57.7812px;"><td class="confluenceTd" rowspan="2" style="height: 87.5781px;">Power

</td><td class="confluenceTd" style="height: 57.7812px;">Voltage

</td><td class="confluenceTd align-center" style="height: 57.7812px;">12-30 VDC /

24 VAC

</td><td class="confluenceTd align-center" style="height: 57.7812px;">12-30 VDC

</td><td class="confluenceTd align-center" style="height: 57.7812px;">12-30 VDC /

24 VAC

</td><td class="confluenceTd align-center" style="height: 57.7812px;">12-30 VDC

</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" style="height: 29.7969px;">Power</td><td class="confluenceTd align-center" colspan="4" style="height: 29.7969px;">&lt; 1 W</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" colspan="2" style="height: 29.7969px;">Frame ground protection</td><td class="confluenceTd align-center" colspan="4" style="height: 29.7969px;">yes</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" rowspan="2" style="height: 59.5938px;">Serial  
interface

</td><td class="confluenceTd" style="height: 29.7969px;">RS232</td><td class="confluenceTd align-center" colspan="2" style="height: 29.7969px;">N/A</td><td class="confluenceTd align-center" colspan="2" style="height: 29.7969px;">TxD, RxD, GND</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" style="height: 29.7969px;">RS485</td><td class="confluenceTd align-center" colspan="2" style="height: 29.7969px;">A, B</td><td class="confluenceTd align-center" colspan="2" style="height: 29.7969px;">N/A</td><td>  
</td><td>  
</td></tr><tr style="height: 37.7188px;"><td class="confluenceTd" colspan="2" style="height: 37.7188px;"><span class="legacy-color-text-green4" style="color: rgb(45, 194, 107);">3000 VDC isolation</span>

</td><td class="confluenceTd align-center" style="height: 37.7188px;"><span class="legacy-color-text-green4" style="color: rgb(45, 194, 107);">3-way  
</span>

</td><td class="confluenceTd align-center" style="height: 37.7188px;"><span class="legacy-color-text-green4" style="color: rgb(45, 194, 107);">single side</span>

</td><td class="confluenceTd align-center" style="height: 37.7188px;"><span class="legacy-color-text-green4" style="color: rgb(45, 194, 107);">3-way</span>

</td><td class="confluenceTd align-center" style="height: 37.7188px;"><span class="legacy-color-text-green4" style="color: rgb(45, 194, 107);">single side</span>

</td><td>  
</td><td>  
</td></tr><tr style="height: 35.3906px;"><td class="confluenceTd" colspan="2" style="height: 35.3906px;">Baud rate

</td><td class="confluenceTd align-center" colspan="4" style="height: 35.3906px;">up to 115200 bps

</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" colspan="2" style="height: 29.7969px;">LED indicators</td><td class="confluenceTd align-center" colspan="4" style="height: 29.7969px;">communication Tx, Rx and power</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" colspan="2" style="height: 29.7969px;">RS485 Termination</td><td class="confluenceTd align-center" colspan="2" style="height: 29.7969px;">120 ohm manually enabled</td><td class="confluenceTd align-center" colspan="2" style="height: 29.7969px;">N/A</td><td>  
</td><td>  
</td></tr><tr style="height: 33.4531px;"><td class="confluenceTd" rowspan="3" style="height: 100.359px;">Connector</td><td class="confluenceTd" style="height: 33.4531px;">RS232</td><td class="confluenceTd align-center" colspan="2" style="height: 33.4531px;">N/A</td><td class="confluenceTd align-center" colspan="2" style="height: 33.4531px;">3-pin terminal block max. 2.5 mm<sup>2</sup> wire</td><td>  
</td><td>  
</td></tr><tr style="height: 33.4531px;"><td class="confluenceTd" style="height: 33.4531px;">RS485</td><td class="confluenceTd align-center" colspan="2" style="height: 33.4531px;">3-pin terminal block max. 2.5 mm<sup>2</sup> wire</td><td class="confluenceTd align-center" colspan="2" style="height: 33.4531px;">N/A</td><td>  
</td><td>  
</td></tr><tr style="height: 33.4531px;"><td class="confluenceTd" style="height: 33.4531px;">Power</td><td class="confluenceTd align-center" colspan="4" style="height: 33.4531px;">3-pin terminal block max. 2.5 mm<sup>2</sup> wire</td><td>  
</td><td>  
</td></tr><tr style="height: 80.1719px;"><td class="confluenceTd" rowspan="2" style="height: 109.969px;">Transmission  
distance

</td><td class="confluenceTd" style="height: 80.1719px;">RS485

</td><td class="confluenceTd align-center" colspan="4" style="height: 80.1719px;">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)

</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" style="height: 29.7969px;">RS232</td><td class="confluenceTd align-center" colspan="4" style="height: 29.7969px;">max. 15 m at 115.2 kbps</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" colspan="2" style="height: 29.7969px;">Mounting and enclosure</td><td class="confluenceTd align-center" colspan="4" style="height: 29.7969px;">DIN rail, plastic PA - UL 94 V0, black/green</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" colspan="2" style="height: 29.7969px;">Temperatures</td><td class="confluenceTd align-center" colspan="4" style="height: 29.7969px;">-40°C to +75°C operating and storage  
</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td class="confluenceTd" colspan="2" style="height: 29.7969px;">Humidity</td><td class="confluenceTd align-center" colspan="4" style="height: 29.7969px;">10 - 90% RH, non-condensing</td><td>  
</td><td>  
</td></tr><tr style="height: 35.3906px;"><td class="confluenceTd" colspan="2" style="height: 35.3906px;">ESD protection

</td><td class="confluenceTd align-center" colspan="4" style="height: 35.3906px;">±4 kV contact discharge / ±8 kV air discharge

</td><td>  
</td><td>  
</td></tr><tr style="height: 29.7969px;"><td colspan="2" data-colwidth="68,50" style="height: 32.375px;">Certification

</td><td class="align-center" colspan="6" data-colwidth="102,101" style="height: 32.375px;">CE, RoHS, EMC, LVD

</td></tr><tr><td colspan="2" style="height: 58.9844px;">Norms

</td><td colspan="6" style="height: 58.9844px;">61000-6-2 - Immunity standard for industrial environments

61000-6-4 - Emission standard for industrial environments

</td></tr></tbody></table>

### Variants  


#### R01 - THREE-WAY Isolated RS485 Repeater  


<div drawio-diagram="1633"><img src="https://doc.redisage.com/uploads/images/drawio/2026-02/drawing-29-1770989766.png" alt=""/></div>

#### R02 - Isolated RS485 Repeater  


<div drawio-diagram="1634"><img src="https://doc.redisage.com/uploads/images/drawio/2026-02/drawing-29-1770990044.png" alt=""/></div>

#### R03 - THREE-WAY Isolated RS232 Separator Repeater  


<div drawio-diagram="1637"><img src="https://doc.redisage.com/uploads/images/drawio/2026-02/drawing-29-1770990428.png" alt=""/></div>

#### R04 - Isolated RS232 Separator Repeater  


<div drawio-diagram="1638"><img src="https://doc.redisage.com/uploads/images/drawio/2026-02/drawing-29-1770990649.png" alt=""/></div>

### Frame ground FG  


Electronic circuits are constantly prone to electrostatic discharge ESD. Redisage Electronics modules feature a design for the frame ground terminal block FG. The frame ground provides a path for bypassing ESD, which provides enhanced static protection ESD abilities and ensures the module is more reliable. Connecting FG terminal block to the earth ground will bypass the ESD disturbances outside the device so will provide a better level of protection against ESD.

Frame Ground FG connection reference drawing is provided below.

<div drawio-diagram="177"><img src="https://doc.redisage.com/uploads/images/drawio/2024-03/drawing-10-1711619289.png" alt=""/></div>

If earth ground is not available FG can be left floating or it can be connected with the power supply GND.

### Pin assignments  


<table border="1" id="bkmrk-r01-r02-r03-r04" style="border-collapse: collapse; width: 100%; height: 332.375px;"><colgroup><col style="width: 50%;"></col><col style="width: 50%;"></col></colgroup><tbody><tr style="height: 302.578px;"><td class="align-center" style="height: 302.578px;">**R01**

**[![image.webp](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/5KEimage.webp)](https://doc.redisage.com/uploads/images/gallery/2024-04/5KEimage.webp)**

</td><td class="align-center" style="height: 302.578px;">**R02**

**[![image (1).webp](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/Y4nimage-1.webp)](https://doc.redisage.com/uploads/images/gallery/2024-04/Y4nimage-1.webp)**

</td></tr><tr style="height: 29.7969px;"><td class="align-center" style="height: 29.7969px;">**R03**

**[![image (2).webp](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/XZ7image-2.webp)](https://doc.redisage.com/uploads/images/gallery/2024-04/XZ7image-2.webp)**

</td><td class="align-center" style="height: 29.7969px;">**R04**

**[![image (3).webp](https://doc.redisage.com/uploads/images/gallery/2024-04/scaled-1680-/Wnmimage-3.webp)](https://doc.redisage.com/uploads/images/gallery/2024-04/Wnmimage-3.webp)**

</td></tr></tbody></table>

### Enclosure dimensions

1U Module Enclosure  
98 x 17.5 x 56.4  
Units: mm

[![image.webp](https://doc.redisage.com/uploads/images/gallery/2024-05/scaled-1680-/iDCimage.webp)](https://doc.redisage.com/uploads/images/gallery/2024-05/iDCimage.webp)

### Additional notes  


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<div drawio-diagram="557"><img src="https://doc.redisage.com/uploads/images/drawio/2024-04/drawing-10-1714134602.png" alt=""/></div>

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#### Datasheet-ID: 

SR-D

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