Case study · Property management
Wireless energy & water submetering for a mixed-use portfolio
Retrofitting existing Modbus energy meters and pulse water meters in occupied towers to deliver tenant-level interval data.
01 · Challenge
The challenge
Tenant utility recovery relied on monthly manual readings of meters located in risers and electrical rooms, causing disputes and delayed billing.
02 · Existing system
- Modbus RTU energy meters without a data network
- Mechanical water meters with pulse outputs
- BMS covering central plant only
03 · Devices & protocols
- Modbus-to-LoRaWAN converters
- LoRaWAN pulse counters
- Three-phase LoRaWAN meters for new DBs
- Indoor LoRaWAN gateways
04 · Integration
- Billing export via REST API
- Monthly tenant consumption reports
- Leak and continuous-flow alarms
05 · Results
- Replaces manual meter reading with interval data
- Measured basis for tenant recharging
- Continuous-flow alarms for leak detection
Architecture
How it was connected
- 01
Energy & water meters
Modbus · Pulse
- 02
Retrofit converters
Modbus / pulse → LoRaWAN
- 03
Indoor gateways
Per tower, 4G/Ethernet
- 04
ChirpStack
Central network server
- 05
Platform & billing
API export
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