> 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-home/inels-wireless/overview.md).

# Overview

## What is iNELS Wireless?

iNELS Wireless is a wireless control system designed for **building automation and smart home applications**. Devices such as buttons, detectors, sensors, controllers and actuators communicate by radio and control electrical and building technologies.

The system can be used for:

* Lighting control
* Heating and temperature control
* Blinds and shading
* Energy management
* Smart home automation

Because devices communicate wirelessly, iNELS Wireless is particularly useful in **renovations and existing buildings**, where installing new control cables is difficult or costly.

## How it is built

Three kinds of device work together:

* **Transmitters** send commands — buttons, wall controllers, key fobs, detectors, input modules, sensors.
* **Receivers** do the work — switch units, dimmers, shutter units.
* **Gateways (system units)** — eLAN-103, eLAN-204, RFTC-3 — connect the system to the app and cloud and add scenes, timers and automation.

Transmitters and receivers are connected by **pairing by hand**. A gateway adds **app, cloud and higher logic** on top. Details: [Transmitters, receivers and gateways](/inels-home/inels-wireless/transmitters-receivers-and-gateways.md).

## Main advantages

* **Reduced wiring** — control signals are transmitted wirelessly.
* **Flexible installation** — devices can be installed without running new control cables.
* **Suitable for renovations** — useful where modifying existing wiring would be difficult.
* **Easy expansion** — additional devices can be added to an existing system.
* **Wide range of applications** — lighting, heating, shading, security and automation can be integrated.
* **Flexible device placement** — wireless sensors and controls can be positioned where they are needed.
* **Automation** — devices can interact to create automatic functions and scenarios.