Scenario Overview
A traditional BMS retrofit costs a fortune and shuts you down — Seeed delivers the same energy management at ~20% of the cost, with zero downtime.
5-Min Live Monitoring
5-Min Live Monitoring
  • Real-time: power, HVAC, temp, faults
  • 5-minute refresh, instant anomaly alerts
  • LoRaWAN wireless, zero cabling
99% Device Compatible
99% Device Compatible
  • HVAC, meter & lighting protocols plug right in (Modbus / BACnet…)
  • 99% of existing devices, no swap
  • Fits legacy BMS or bare buildings
20% of BMS Cost
20% of BMS Cost
  • Smart scheduling saves 15–25% annually
  • Open-source, no proprietary training
  • Zero-downtime deploy, no losses
Scenario Detail
HVAC Energy Retrofit

Leave the legacy HVAC in place — teach it to run on demand

Keep every existing HVAC unit in place. LoRaWAN temperature / humidity / CO₂ sensors wall-mount in minutes, while a boxed gateway in the electrical cabinet takes over valves and fan actuators — adjusting setpoints by schedule, occupancy, and tariff peaks. Corridors throttle down at night, meeting rooms shut off after use, and savings show immediately.


Core Advantages

  • Wall-mount sensors: LoRaWAN probes stick on and run — no wiring
  • Weather-driven load forecasting: rooftop weather station + outdoor data predict HVAC peaks ahead of time
  • Open-source dashboard: HomeAssistant / Node-RED show every zone in real time
Reference Design
Scene Feature
Wall T&H / CO₂ Sensor
Wall-mount probes for offices, meeting rooms, corridors — wireless indoor data
Scene Feature
Weather-Based Load Forecast
Rooftop weather station + outdoor T&H data forecast HVAC peaks, enabling off-peak scheduling
Scene Feature
Zone Dashboard Visibility
Per-zone temperature / CO₂ / fan status at a glance — strategies are tunable
Lighting System Retrofit

Keep existing fixtures — lights only when occupied

Pull every existing fixture in the building — Philips / KNX / DALI / Modbus, any protocol — into the R1225 open-source gateway. Combined with LoRaWAN occupancy / light sensors, corridors light up on motion, offices sleep at lunchtime, and zones are scheduled at night. Every circuit is visible in the open-source dashboard and remotely controllable.


Core Advantages

  • Multi-protocol fixture integration: KNX / DALI / Modbus and more, unified
  • Occupancy + lux triggers: corridor motion sensing, auto-dim when daylight is sufficient
  • Open-source remote scheduling: lunch / after-hours / weekend policies switched in one click
Scene Feature
Occupancy / Light Sensor
Wall-mount PIR + lux for corridors and desks — light when needed
Scene Feature
Multi-Protocol Fixtures
Connect legacy KNX / DALI / Modbus fixtures directly — no replacement
Scene Feature
Zone Policy Panel
Open-source dashboard schedules on/off and dimming for every area and circuit
Power System Retrofit

Keep the legacy cabinet — every circuit becomes visible

Install an R1225 boxed gateway plus non-invasive CT clamps inside the electrical cabinet to monitor every circuit and floor in real time. Water-leak / temperature / smoke alerts arrive in seconds. All data feeds into a single open-source dashboard — utility meters, HVAC, lighting, all in one place.


Core Advantages

  • Cabinet-embedded deployment: R1225 fits inside the panel — saves equipment room space
  • Non-invasive CT clamps: clip on to monitor current — no power-down retrofit
  • Unified open-source dashboard: all energy / alerts in one panel
Open-Source ExamplewikiR1000 Docs
Scene Feature
Cabinet-Embedded Gateway
Gateway / data logger mounts inside the cabinet or on the wall — 35mm DIN rail, saves space
Scene Feature
Non-Invasive CT Monitoring
Clamp the CT onto the circuit — no power-down, no rewiring
Scene Feature
Unified Open Dashboard
Meters + HVAC + lighting data all in one panel — real-time alert push
Deployment & Selection
Architecture

LoRaWAN Backbone + Open-Source Gateway

The retrofit stack is built from three layers: a sensor layer (LoRaWAN / RS485 probes), a gateway layer (one R1225 handles LoRa reception + multi-protocol conversion + edge control), and an application layer (open-source platform or the customer's own cloud).


Core Advantages

  • Sensor layer: battery LoRaWAN probes wall-mount; legacy RS485 meters via S2100 to wireless
  • Gateway layer: a single R1225 covers LoRa + Modbus / BACnet + 4G / Ethernet backhaul
  • Application layer: HomeAssistant / Node-RED / custom Python — data stays local or syncs to the customer cloud
wikiSelection Guide
ImageProductMeasurementsConnectivityIP Rating
S700 V2 7-in-1 Compact Weather StationS700 V2 7-in-1 Compact Weather Stationair temperature / relative humidity / barometric pressure / light intensity / rainfall / wind speed / wind directionRS485, SDI-12IP66
S700-A 7-in-1 Weather Station (Radar Rain)S700-A 7-in-1 Weather Station (Radar Rain)air temperature / relative humidity / barometric pressure / wind speed / wind direction / rainfall intensity (radar) / light intensityIP66
S700-B 7-in-1 Weather Station (Solar Radiation)S700-B 7-in-1 Weather Station (Solar Radiation)air temperature / relative humidity / barometric pressure / precipitation intensity (optical) / wind speed / wind direction / global solar radiation / sunshine durationModbusIP66
S700-C 7-in-1 Weather Station (Solar + Radar Rain)S700-C 7-in-1 Weather Station (Solar + Radar Rain)air temperature / relative humidity / barometric pressure / rain intensity (radar) / wind speed / wind direction / global solar radiation / sunshine durationModbusIP66
S2106 pH SensorS2106 pH SensorpH 0~14 pHLoRaWAN, BLEIP66
S2108 Soil Moisture/Temp/Pore EC SensorS2108 Soil Moisture/Temp/Pore EC Sensorsoil_moisture 0~100% (m³/m³)
temperature -40~80C
pore_EC 0~20 ms/cm (Bulk), 0~32 ms/cm (Pore)		LoRaWAN, BLEIP66
S2101 Air Temperature and Humidity SensorS2101 Air Temperature and Humidity Sensortemperature -40~85C
humidity 0~100%RH		LoRaWAN, BLEIP66
S2102 Light Intensity SensorS2102 Light Intensity Sensorlight intensity 0~160000 luxLoRaWAN, BLEIP66
S2103 CO2, Temperature, and Humidity SensorS2103 CO2, Temperature, and Humidity SensorCO2 400~10000ppm
temperature -40~85C
humidity 0~100%RH		LoRaWAN, BLEIP66
S2105 Soil Moisture/Temp/EC SensorS2105 Soil Moisture/Temp/EC Sensorsoil_moisture 0~100% (m³/m³)
temperature -40~80C
EC 0~23 dS/m		LoRaWAN, BLEIP66
S2107 Temperature Sensor with PT1000S2107 Temperature Sensor with PT1000temperature -50~300°CLoRaWANIP66
S2100 Data Logger/DTUS2100 Data Logger/DTULoRaWAN, BLEIP66

Choose probes by measurement parameter

LoRaWAN probes run on batteries for 5–10 years per unit; legacy RS485 meters connect via the S2100 data logger over LoRa. The table below lists the SenseCAP probes most commonly used in building retrofits.


Core Advantages

  • T&H / CO₂: trigger basis for on-demand HVAC scheduling
  • Light-triggered: S2102 dims lighting when ambient daylight is sufficient
  • Universal RS485: S2100 converts any Modbus-RTU meter / probe to LoRa
ImageProductConnectivityUse Case
reComputer R1225 GatewayreComputer R1225 GatewayWi-Fi, Bluetooth/BLE, LoRaWANMain building gateway
reComputer R1024-10 IoT GatewayreComputer R1024-10 IoT GatewayModbus, BACnet, EthernetWired meter collection / LAN deployment
reComputer R1125-10 IoT Gateway (PoE)reComputer R1125-10 IoT Gateway (PoE)WiFi, BLE, Ethernet, RS485, CAN busDIN rail / cabinet mount (PoE)
Indoor Gateway(SX1302)Indoor Gateway(SX1302)LoRaWAN, Ethernet, WiFi, BLEExtend indoor LoRa coverage
Sensor Hub Industrial-grade 4G Data LoggerSensor Hub Industrial-grade 4G Data Logger4G LTE, LoRaWAN, MQTT, MODBUS-RTUScattered meters, no gateway

Pick the gateway + data logger combo by backhaul

The core of the building is the R1225 — a combined LoRaWAN industrial gateway and multi-protocol controller. To extend LoRa indoor coverage, add a SenseCAP M2 Gateway. If there's no LoRa gateway at all and you only need RS485 meters → 4G direct-to-cloud, the SenseCAP Sensor Hub 4G alone is enough.


Core Advantages

  • R1225 flagship: LoRaWAN + Modbus / BACnet / Ethernet-IP + 4G/Ethernet — one unit covers a building
  • SenseCAP M2 indoor gateway: pure LoRaWAN gateway — extends indoor coverage, works with ChirpStack / TTN
  • SenseCAP Sensor Hub 4G: RS485 → 4G direct-to-cloud — no gateway needed, ideal for scattered / remote points
ImageProductUse CaseConnectivity
Watcher W1-B White EnclosureWatcher W1-B White EnclosureEdge AI Agent, event-triggered actionsWiFi, BLE
Indicator D1Indicator D14-inch touchscreen, ops/facility entryWiFi, BLE, LoRa
reTerminal DM 10.1reTerminal DM 10.1" Industrial HMI10.1-inch industrial HMI, programmableEthernet, RS485, CAN bus

A visible, voice-friendly entry point to the building

Beyond the gateway, the building also needs an entry point where facilities and operations can see live data and step in manually. Watcher works like a duty officer who never clocks out — if a meeting room is empty with the lights on, it switches them off. Indicator is a 4-inch touchscreen — facilities can check live energy and override policies without booting a PC.


Core Advantages

  • SenseCAP Watcher: physical AI Agent — event-triggered HVAC / lighting actions
  • SenseCAP Indicator D1S: 4-inch touch panel — instant entry point for ops / facilities
  • Wi-Fi / LoRaWAN to R1225: shares the same platform as the existing gateway — one-click config push
Reference Design
Success Cases

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