# 3rd Party Integration

One of the key strengths of the iNELS ecosystem is its **openness to third-party integration**. Modern buildings often include a mix of technologies and systems—lighting, HVAC, access control, energy management, and property management. iNELS provides multiple integration interfaces, ensuring seamless communication between our central units and external devices or platforms.

### **Integration Interfaces**

#### 1. **MQTT on Central Units**

* All new-generation iNELS central units support **MQTT protocol**, enabling direct connection to IoT platforms, cloud services, and open-source automation systems (e.g., Home Assistant, Node-RED).
* Use cases:
  * IOT projects
  * Cloud-based dashboards and analytics
  * Interfacing with 3rd-party sensors and controllers

#### 2. **Modbus on CU3-10M**

* The **CU3-10M** central unit includes a native **RS-485 Modbus interface**.
* Functions as a **Modbus Master**, allowing communication with HVAC controllers, energy meters, and other Modbus-enabled devices.
* Use cases:
  * VRV/VRF integration via Modbus gateways
  * Energy management (meters, analyzers)
  * HVAC controllers (chillers, AHUs, ducted splits)

#### 3. **DALI on CU3-09M/DALI**

* The **CU3-09M/DALI** central unit acts as a **DALI Master**, directly managing up to 64 DALI ballasts or drivers.
* Provides full support for DALI groups, scenes, and status feedback.
* Use cases:
  * Human Centric Lighting (HCL) control
  * Large commercial or office lighting projects
  * Integration with existing DALI infrastructure

#### 4. **API to iNELS Hotel Reservation (iHRS)**

* The **iNELS Hotel Reservation System (iHRS)** includes an open **REST API** for integration with **Property Management Systems (PMS)**, access control, and booking platforms.
* Enables smooth data flow between hotel front office and room automation.
* Use cases:
  * Automatic room assignment and card issuing
  * Guest check-in/out synchronization
  * Energy-saving automations linked to occupancy

###


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://wiki.inels.com/inels-bus/3rd-party-integration.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.