# RD022 splitter

RD022 cascadable splitter for three (3) digital interfaces/sensors, splits the 1 Wire interface into 3 channels. The splitters may be cascaded.

<figure><img src="/files/2hQRk7w3aeDaN2vXu6kJ" alt="" width="324"><figcaption><p>RD022 splitter</p></figcaption></figure>

The RD022 splitter has RJ12 sockets on both shorter sides. These sockets use 1-Wire BBO standard and one of them shall be connected to one of free black 1-Wire BBO sockets inside XBB006 using [#reversed-cable](#reversed-cable "mention"). The other one can be used to connect the next RD022 splitter using [#straight-cable](#straight-cable "mention"). Both pinouts are described in [1-Wire BBO and ICU pinouts](/bbo-gateway-installation-manual/bbo-gateways/xbb006-bbo-1-wire-gateway/1-wire-bbo-and-icu-pinouts.md) chapter.

There are also 3 RJ12 sockets on one of the long sides. They have ICU 1-Wire pinout and can be used to connect digital sensors or interfaces.

An example of XBB006 with 2 RD022 splitters, one XBT006 PT100 interface with PT100 temperature sensor.

![Use of RD022 splitters](/files/yDwJk9YLvuFOMexWNZ9P)

## Straight cable

The straight 1-Wire cable has 2 RJ12 plugs with pin 1 on one side connected to pin 1 on the other end and so forth. The RJ12 tabs are on the opposite sides of the cable as shown below:

<figure><img src="/files/dFZBx5gpzR4rpPIfb5BT" alt=""><figcaption></figcaption></figure>

The straight cable is used to connect RD022 splitter to another RD022 splitter.

## Reversed cable

The reversed 1-Wire cable has 2 RJ12 plugs with pin 1 on one side connected to pin 6 on the other end and so forth. The RJ12 tabs are on the the same side of the cable as shown below:

<figure><img src="/files/qtbJ6F8xZ3CQ5i28uPIc" alt=""><figcaption></figcaption></figure>

The reversed cable is used to connect XBBO006 1-Wire BBO socket with 1-Wire BBO socket of the RD022 splitter.


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