Inter-Branch Temperature and Alarm Monitoring with NetRelay and MQTT

Within the scope of this project, a NetRelay-based IoT monitoring and control system was developed to centrally track temperature measurements and alarm conditions at branches located in different cities or regions.

Inter-Branch MQTT Communication

A NetRelay device installed at each branch collects data from temperature sensors, alarm panels and field equipment, then transmits it to a central server through the MQTT protocol. Branches with an internet connection can independently connect to the system, while all data is displayed through a single management dashboard.

Temperature Monitoring

Temperature values in cold storage rooms, server rooms, markets, restaurants, production areas and technical rooms are measured in real time. The system automatically generates an alarm when a predefined minimum or maximum temperature threshold is exceeded.

Alarm and Digital Input Monitoring

NetRelay digital inputs can be used to monitor fire panels, burglar alarms, flood sensors, door contacts, power failures, generators, UPS systems, air conditioners and other field equipment. When an alarm occurs, the relevant branch, device, alarm type and timestamp are immediately transmitted to the central system.

Remote Control

Authorized users can remotely operate NetRelay relay outputs through MQTT. This makes it possible to securely control compatible field equipment such as air conditioners, ventilation systems, sirens and lighting, or remotely restart equipment when required.

Centralized Management and Notifications

Temperature values, connection status and alarm conditions for all branches can be monitored through a central control panel. In critical situations, automatic notifications can be sent to responsible personnel by email, mobile notification, SMS or other preferred communication channels.

Data Logging and Reporting

Temperature measurements, alarm start and end times, device connectivity status and remotely issued commands can be recorded. Historical data can be used for analysis, performance evaluation, maintenance planning and audit processes.

• Central monitoring of multiple branch locations
• Fast and bandwidth-efficient MQTT communication
• Real-time temperature monitoring
• Minimum and maximum temperature threshold alarms
• Monitoring of fire, flood, door, power and equipment alarms
• Remote control through NetRelay relay outputs
• Branch-based and device-based authorization
• Historical data logging and reporting
• Internet and device connectivity monitoring
• Email, SMS and mobile notification integration