> For the complete documentation index, see [llms.txt](https://wiki.inels.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.inels.com/inels-bus/introduction/inels-bus-technology..md).

# iNELS BUS Technology.

iNELS bus system is the system to control smart home or buildings. The iNELS bus utilizes a twisted pair cable for both power and data transfer, operating at DC 27V.

<figure><img src="/files/5NVsiGoOVCXchtWmUryv" alt=""><figcaption><p>Basic setup of iNELS bus installation with power supply, bus separator and Central unit</p></figcaption></figure>

The main components of the iNELS bus system include the central unit, power supply, and various system units such as bus separators, switch actuators, sensors, and controllers. The central unit acts as the brain of the system, controlling the other units. It communicates with the iNELS cloud using the IP protocol, enabling real-time monitoring, remote control, and integration capabilities.

<figure><img src="/files/6k3JbUxfLtzSpvUE3mwO" alt=""><figcaption><p>Fig: iNELS Bus wiring</p></figcaption></figure>

Additionally, the iNELS central units are implemented with the MQTT protocol. MQTT stands for Message Queuing Telemetry Transport, and it is a lightweight messaging protocol designed for efficient communication in constrained networks. By implementing MQTT, the iNELS central units can send status updates and receive commands from third-party systems, enhancing interoperability and integration with other smart home or building automation systems.


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