# MacTalk-DM LoRa Gateway Node

URL: https://www.macnman.com/docs/mactalk/mactalk-dm/mactalk_dm_document
Section: User Manual › Mactalk › Mactalk Dm

# Gateway Configuration Guide

## 1. App Setup & Device Connection

Use the **Macnman Maya** mobile application to configure the gateway.

**Steps:**
- Install the app from Play Store
- Login using your Gmail ID
- Scan for nearby devices
- Connect via:
  - Device selection, or
  - QR code scan

**What this does:**  
Establishes initial communication between your phone and the gateway for configuration.

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## 2. Device Overview & Basic Controls

Once connected, the home screen allows:

- **Device Naming** → Assign a unique identifier for easier management  
- **Heartbeat Setting** → Defines how frequently the device communicates  
- **Data Read** → View live device data  

**Why it matters:**  
Helps in organizing multiple devices and controlling communication intervals.

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## 3. Device Naming

To rename:
- Open **Name field**
- Enter new name
- Save

![Name – LoRa Gateway Node](/img/mayascreens/name.svg)

**Best Practice:**  
Use structured naming (e.g., `Site-Floor-DeviceType`) for scalability.

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## 4. LoRa Communication Settings

Go to **LoRa Settings** and verify parameters.

All settings must match:
Sensor ↔ Gateway

### Required Parameters

- **Class** → Must match  
- **Frequency (IN865)** → Standard band in India  
- **Spreading Factor (SF)**  
  - Lower SF → Faster transmission, shorter range  
  - Higher SF → Slower transmission, longer range  

- **Channel** → Must be identical  
- **Slave ID** → Unique per device  
- **Encryption Key** → Must match for secure communication  

**Purpose:**  
Ensures stable and secure wireless communication.

#### How to change LoRa Class? :

![lorawan classes](/img/lorawan/class.svg)

**LoRa Class**  
Select the appropriate **LoRa Class** based on your device’s power source and application needs:

- **Class A**  
  Recommended for **battery-powered** devices. It offers the **lowest power consumption** and is suitable for sensors that transmit data occasionally.
  
- **Class C**  
  Designed for **mains-powered devices**.
  It keeps the receiver **always on**, allowing near-instant downlink communication from the server.  

Choosing the correct class helps optimize battery life and network responsiveness based on your deployment.

**Controller are available in the Class C mode only:**

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## LoRa Frequency

![lorawan frequency](/img/lorawan/freq.svg)

Select the appropriate LoRa frequency band **based on your deployment region** and **local regulatory** standards.

- **Example**  
  `IN865(India)` , `IN868(Europe)` ,`US915(North America)`

--- 

## LoRa SF

#### How to LoRa Spreading Factors ? :

Inside LoRa settings, navigate to SF (Spreading Factor) and toggle up and down as per requirement.

![lorawan frequency](/img/mayascreens/lora-spreading-factor-mactalk.svg)

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## LoRa Channels

#### How to setup LoRa channels ? :

Inside LoRa settings, navigate to channels and type in channel number as per requirement.

![lorawan frequency](/img/mayascreens/lora-channels-input.svg)

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## Slave ID

#### How to setup device slave ID ? :

Inside LoRa settings, navigate to Slave ID and type in Slave ID number as per requirement.

![lorawan frequency](/img/mayascreens/mactalk-slave-id-dm.svg)

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## Encryption Key

#### How to setup device Encryption Key ? :

Inside LoRa settings, navigate to Encryption Key and type in Encryption Key number as per requirement.

![lorawan frequency](/img/mayascreens/lora-en-key-mactalk-sample.svg)

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## 5. Network Capacity

- Supports up to **20 devices per gateway**
- Recommended with **5-minute uplink interval**

**Note:**  
Higher frequency of data transmission may reduce capacity.

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## 6. RS485 Communication Setup

Used when connecting external sensors via RS485.

Navigate to **RS485 Settings**

### Parameters

- **Baud Rate**  
  Must match sensor specification (e.g., 9600, 19200)

- **Parity**  
  Options:
  - None  
  - Even  
  - Odd  

**What this does:**  
Ensures correct serial communication and accurate data acquisition.

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## Related Resources

- Datasheets: [LoRaWAN product datasheets](/product/lorawan)
- Help: [Contact Macnman support](/help/help)