Connected Building Management Systems: From Local Control to Multi-Site Cloud Solutions
Commercial, industrial, and multi-unit buildings often have a local building management system (BMS) controller—a computer or server located in a utility room. This controller manages the HVAC, lighting, access control, and meters. However, its scope of monitoring is limited to the building’s walls.
For operators with multiple sites—social housing providers, commercial property managers, healthcare facilities, hotels, and campuses—the 4G-connected building management system provides centralized monitoring without the need for complex network infrastructure:
- Cloud access from any browser, with no need to configure a corporate VPN.
- Multi-site monitoring — 1, 10, or 100 buildings in a single interface.
- Alerts for HVAC malfunctions, abnormal energy consumption, and out-of-range temperatures.
- Remote maintenance of BMS controllers without on-site visits.
- Rapid deployment — one gateway per building, set up in 30 minutes.
4G-Connected Building Management System Architecture
What Is Monitored in a Connected Building Management System
| System | Data Collected | Typical Alerts |
|---|---|---|
| Heating / Heat Pump | Supply/return temperature, setpoint, status | Temperature out of range, equipment fault |
| AHU (Air Handling Unit) | Supply air temperature, CO₂, humidity, airflow | Poor air quality, clogged filter |
| Air Conditioning | Room temperature, setpoint, mode | Temperature not reached, overheating |
| Electricity Meters | kWh, power, power factor | Exceeds contracted power |
| Water Meters | m³, flow rate | Abnormal consumption (leak) |
| Lighting | Status (ON/OFF), scenarios | Lamp failure, forgotten to turn off |
| Access / Security | Alarm armed, door status | Intrusion, door open outside permitted range |
Use Case: Multi-Site Operators
Social Housing Provider A housing provider manages 80 residential buildings with central heating systems. Currently, reports of malfunctions come from tenants. With the Eziwan 4G Building Management System (BMS), each heating system provides real-time data on flow temperature, circuit pressure, and burner status. Failures are detected before tenants complain. Technicians make 70% fewer on-site visits.
Commercial Real Estate An office building manager wants to control heating settings for each building from a central interface. With the 4G building management system, they can adjust heating schedules and set temperatures for each building—without having to travel to each location—while monitoring energy consumption in real time.
Healthcare Facility A nursing home monitors temperature and air quality in all rooms and common areas. Alerts are sent to the technical team if a zone falls outside the regulatory ranges (low temperature, high CO₂, humidity). A daily report is automatically generated to meet regulatory requirements.
The Eziwan Approach
The Eziwan Gateway is designed to be mounted on a DIN rail in the equipment room, connect to the building management system (BMS) via BACnet/IP or Modbus TCP, and upload data to the Eziwan Cloud. The multi-carrier 4G connection ensures monitoring even if the building does not have an Ethernet network available.
For more information: smart connected buildings, remote site monitoring, and industrial energy monitoring.