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Home & Building AutomationScenario

Building Energy Retrofit

Wireless metering and sensing for existing buildings, covering HVAC, lighting and power distribution without new cabling. Battery LoRaWAN sensors and existing RS485 meters report to a DIN-rail gateway that converts protocols, runs local rules and feeds a dashboard or your own cloud. It is for building owners, facility managers and integrators upgrading offices, malls, campuses and hospitals.

Homes and buildingsRetail

Talk to an engineer See the hardware

Older government office blocks of Udyog Bhawan in New Delhi with window AC units, seen across a hedge — Photo: Pinakpani, CC BY-SA 4.0, Wikimedia Commons. Shows the setting, not this installation.

The problem

Why it matters.

Replacing old HVAC, lighting and panels is expensive, so buildings over-cool rooms, leave lights on and miss circuit overloads.

No rewiring for sensors; CTs fit without cutting wires
Setpoint writes read back and alarmed on error
Data can stay on the LAN

The flow

From signal to action.

01SenseSensors and metersWireless climate, CO2 and light sensors, CT clamps and existing RS485 meters measure each zone and circuit.
02ConnectData loggerAn S2100 logger turns RS485 meter readings into LoRaWAN messages.
03DecideBuilding gatewayThe R1225 receives LoRa data, converts Modbus, BACnet, KNX or DALI and runs local logic.
04ActHVAC and lightsSetpoints and dimming commands go to existing controllers, and the gateway reads them back to confirm.
05RecordDashboardZone, lighting and circuit data land on a local dashboard or your cloud over encrypted MQTT or HTTP.

Deployment architecture

How it is wired.

The devices on site, what carries their data, where the decision is made and where the result goes.

01SenseOn site

SenseCAP S2101 LoRaWAN T&H Sensor6 in the sample setup
SenseCAP S2103 LoRaWAN CO2 + T&H Sensor3 in the sample setup
SenseCAP S2107 Temperature Sensor with PT1000
S700 V2 7-in-1 Compact Weather Station
SenseCAP Watcher W1-B
Split-core CT clamps

02ConnectCarries the data

reComputer R1225 LoRaWAN Gateway + Industrial Controller1 in the sample setup
SenseCAP S2100 Data Logger4 in the sample setup
Indoor Gateway (SX1302)
Sensor Hub Industrial-grade 4G Data Logger
LoRaWAN
RS485

03DecideRuns the model

reComputer R1024-10 IoT Gateway

04Your systemsWhere results land

Modbus TCP
BACnet
KNX
DALI
MQTT

05ActWhat happens next

SenseCAP Indicator D1
reTerminal DM 10.1"
HVAC and lights

How it works

Step by step.

01Run a radio signal test on each floor before you place anything.
02Wall-mount temperature, CO2 and light sensors in each zone.
03Connect existing RS485 meters through S2100 loggers.
04Have an electrician clip split-core CTs around the branch circuits you want to meter.
05Mount the gateway on a DIN rail in the panel and link it to HVAC and lighting controllers.
06Set rules such as setpoint readback alerts, daylight dimming and zone schedules on the dashboard.

The hardware

What goes on site.

Items we stock can go straight in the bag. Everything else we source and quote with the installation.

reComputer R1225 LoRaWAN Gateway + Industrial ControllerMain building gateway and local controller1 in the sample setupSourced on quote
SenseCAP S2100 Data LoggerConnects RS485 meters over LoRaWAN4 in the sample setup₹7,979
SenseCAP S2101 LoRaWAN T&H SensorZone temperature and humidity6 in the sample setupSourced on quote
SenseCAP S2103 LoRaWAN CO2 + T&H SensorZone CO2, temperature and humidity3 in the sample setupSourced on quote
SenseCAP S2102 Light Intensity SensorLight levels for daylight dimmingSourced on quote
SenseCAP S2107 Temperature Sensor with PT1000Pipe and duct temperatureSourced on quote
S700 V2 7-in-1 Compact Weather StationOutdoor weather for HVAC schedulingSourced on quote
Indoor Gateway (SX1302)Extends indoor LoRa coverageSourced on quote
reComputer R1024-10 IoT GatewayWired Modbus and BACnet meter collectionSourced on quote
reComputer R1125-10 IoT GatewayPoE gateway with RS485 and CANSourced on quote
Sensor Hub Industrial-grade 4G Data LoggerCollects scattered meters over 4G with no gatewaySourced on quote
SenseCAP Watcher W1-BVoice terminal for staff queriesSourced on quote
SenseCAP Indicator D14 inch touchscreen for energy view and policy switchingSourced on quote
reTerminal DM 10.1"Industrial touch panel for custom screensSourced on quote
Split-core CT clampsBranch circuit power meteringSourced on quote

Before you install

A 35 mm DIN rail in a distribution panel, or wall space, for the gateway and loggers.
A LAN connection, plus an internet link if you want remote viewing, cloud sync or push alerts.
A radio survey to check LoRa coverage through your walls and floors.
A qualified electrician to decide how and when CT clamps can be fitted.
HVAC controllers that allow Modbus or BACnet writes if you want remote control, not just monitoring.

Good to know

LoRa range through walls and the number of sensors per gateway depend on the building. Test on site.
Battery life depends on how often sensors report and on radio settings. The page gives no figures.
Working with a specific AC or BMS brand depends on its point list and write access, and some protocols may need custom work.
The sample kit uses EU868 radios. India uses IN865, so confirm the band. No energy savings figures are claimed.

How we deliver it

Paper to site, one team.

01Site surveyWe walk the site, or review photos and drawings, and agree what to measure and where each device goes.
02PilotOne lane, one line or one room first. We tune it on your conditions and agree what good looks like.
03Roll outWe supply the hardware in India with GST invoices, install it, and connect it to the systems you already run.
04SupportSpares, remote checks and model updates, with one team to call when something changes.

Questions

Asked before buying.

Do we need to rewire the building?

No. Sensors are wireless and battery powered, existing meters connect through loggers, and CT clamps fit around existing cables.

Will it work with our current central AC?

It can read and control central controllers that speak Modbus or BACnet and allow writes. We confirm your model's point list first.

Does our data have to go to the cloud?

No. It can run local only, or send to your own cloud over encrypted MQTT or HTTP.

Want this on your site?

Tell us the site and the problem. We come back with a pilot plan and a priced hardware list.

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