RAK Bridge IO field node
Beside DCD panels and RS485 meters, the field node reads energy data and uses DI/DO for status feedback and relay commands — manual or scheduled AHU/pump control.
CASE_04 · ENERGY · Malaysia
Supergreen Planet DCD — HVAC energy Malaysia
Verified HVAC energy-saving visibility and control across Malaysian facilities
WSmart connects Supergreen Planet’s Demand Control Drives, meters and HVAC circuits for live savings proof, remote control and multi-site energy views.
Executive summary
Supergreen Planet DCD
HVAC is one of the largest electricity loads in Malaysian commercial buildings, hospitals, malls and hotels. Fixed-speed AHUs, chilled-water pumps and cooling towers often run at full power regardless of occupancy or demand.
Supergreen Planet’s Demand Control Drives (DCD) adjust HVAC and pumping to real thermal demand. Reported savings: 40–60% for AHUs, 30–40% for chilled-water pumps and cooling towers, and 40–50% for Water Cooled Package Units (WCPU).
To add live visibility, remote control and proof of savings, Supergreen partnered with WSmart. Wireless LoRaWAN hardware into WSmart.io is live at sites including Queen Elizabeth Hospital Kota Kinabalu, Oriental Melaka Medical Centre, NU Sentral, Aman Sentral, seven Columbia Asia branches, DKSH, Computime, E&O Hotel, Mydin Parit Buntar and TDK.
The challenge
The challenge
- Real-time data collection: automate power and electrical telemetry from DCD-controlled HVAC equipment.
- Remote and scheduled control: provide remote on/off control for AHUs, pumps and mechanical loads with manual override and time-based scheduling.
- Automated ROI and savings proof: compare against pre-installation baselines to calculate kWh saved, MYR savings and CO₂ reduction.
- Auditable ESG reporting: produce exportable energy-performance reports for clients, auditors and sustainability compliance.
- Rapid, cost-effective deployment: minimise cabling and civil works across large hospitals, malls and multi-building facilities.
- Traditional wired BMS involves extensive field wiring, high labour cost and long disruption cycles, so a long-range wireless approach was needed for scalable deployment.
Architecture pillar
The solution · WSmart.io cloud + wireless LoRaWAN
WSmart deployed a wireless data and remote-control layer linking Supergreen DCD panels, power meters and HVAC circuits into WSmart.io.
RAK LoRaWAN gateway
Receives long-range telemetry from Bridge IO nodes and forwards it over LTE or Wi-Fi — cutting thousands of metres of field wiring.
WSmart.io IoT Cloud Platform
Live dashboards, baseline-versus-current comparison, automatic MYR/kWh/CO₂ figures, history, reports and multi-site management across Malaysia.
Safety bypass integration
The DCD system keeps a physical bypass switch. During maintenance or emergency, local HVAC controls continue to work while WSmart keeps monitoring the data.
HVAC application workflows
HVAC application workflows
Air Handling Unit (AHU)
Dynamic airflow optimisation with real-time WSmart.io telemetry and reported energy savings of 40–60%.
Chilled-water pump
Demand-controlled pumping with automated remote switching and reported power reduction of 30–40%.
Cooling tower
Cooling-fan speed adjustment with scheduled/manual control and reported savings of 30–40%.
Water Cooled Package Unit (WCPU)
Compressor and blower optimisation with reported power reduction of 40–50%.
Outcome
Results, validation and sites
- The DCD and WSmart.io integration delivers measurable energy reduction, operational control and auditable performance evidence.
- JKR (Malaysia Public Works Department) verified the solution under its POC validation programme.
- TNB Energy Services endorsed the solution; the supporting quality and product credentials include ISO 9001:2015, SIRIM QAS test-report compliance and the MyHIJAU Mark.
Key deployed sites across Malaysia
Queen Elizabeth Hospital, Kota Kinabalu
Oriental Melaka Medical Centre
NU Sentral Shopping Mall, Kuala Lumpur
Aman Sentral Shopping Centre, Kedah
Columbia Asia Hospitals — 7 branches
DKSH logistics and distribution centres
Computime manufacturing facilities
Eastern & Oriental (E&O) Hotel, Penang
Mydin Hypermarket, Parit Buntar
TDK Electronics Malaysia
On site
DCD hardware in the plant room
GreenPlanet Gen³ Demand Control Drives cabinets beside site control panels — the field hardware WSmart links into WSmart.io over LoRaWAN.
About WSmart
Woow Moment Limited
WSmart builds custom IoT systems for existing sites — web and mobile applications, dashboards and alerts, plus hardware links over protocols such as LoRaWAN, BACnet, Modbus, BLE and MQTT — so teams in Hong Kong and Malaysia get a system that fits their workflow.
Next step
Book a site assessment
Tell us the building type, floor area, what systems are already installed, and what you need to solve. We will come back with an assessment.
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