Hospitality
Hotel energy management that only spends energy where guests actually are
ZOMYO fuses occupancy sensing with the in-room control hardware itself: HVAC set-back, lighting, sockets and curtains follow verified presence, while your PMS and your interior keep working the way they do today.
- Room-level presence from three independent signals — no cameras, no wearables
- One edge host per room: 1× 40 A + 12× 10 A relays, RS485 wired bus, Zigbee 3.0 mesh
- Runs on a local server inside the property — no per-room cloud subscription
Send the room count and your electricity tariff — we return a modelled figure, not a brochure.
Where the money goes
Guest-room energy is wasted in four predictable ways
Every property we survey has the same four leaks. None of them are fixed by asking guests to behave differently.
Empty rooms, running HVAC
A room is serviced, inspected or simply left with the card removed — and the fan coil keeps conditioning empty air until the next check-in.
Windows open, cooling on
Guests ventilate a room while the HVAC holds set point. Nobody notices until the utility bill arrives.
DND that nothing reads
“Do not disturb” is a card on a handle. Housekeeping still knocks, and lights and HVAC still run at full set point.
Retrofits that ask too much
Any energy system that needs every room rewired, or that makes guests change behaviour, fails in the pilot. ZOMYO is engineered to run on the wiring already in the wall.
Per room, per floor
What the platform controls
One edge host (gateway + RCU) drives the room; the same platform carries the rules, the reporting and the permissions.
HVAC & fan coil
Presence-based set-back and off states. Set-back is applied only when a room is confirmed empty — sensing and door-contact state must agree — so a guest who has gone quiet is never cooled out of the room.
Lighting & sockets
Relay-level control of lights, sockets and floor heating, with scenes that follow arrival, rest and departure.
Curtains & shades
Motorised curtains close on departure and on sleep detection, and open on wake or on scene commands from the panel.
Card power, DND & doorplate
Card power switch, doorplate, make-up-room and doorbell modules share the same host — one device family, one platform.
Common areas & back of house
Zone and floor logic for corridors, meeting rooms and back-of-house areas, with auto-off on verified absence.
Metering & saving reports
Per-room, per-floor and per-property consumption and saving reports come from the native PMS suite — no separate analytics licence.
Engineering detail
Room hardware, in numbers
The same host covers retrofit and new build; the difference is how the room is wired, not which platform you buy.
1× 40 A high-power + 12× 10 A for lights, sockets and floor heating
RS485 12 V for wall panels and switches (up to 24 keys)
KNX / Modbus bridge on the same host — BMS keeps its own view
Zigbee 3.0, with Wi-Fi / BLE / Thread-Matter devices supported
Fused Wi-Fi CSI + 24 GHz mmWave radar, cross-checked by door contact
Local dimming, colour, curtain and scene logic keep running with no internet
ZOMYO Control Platform + native PMS suite on a server inside the property
Open API for PMS, BMS and third-party systems
CE / FCC / RoHS
Sensing is state-only: no camera, no microphone in the sensing path, no wearable. No personal identity data is required for automation.
Delivery
How a rollout works
Six steps, priced and scheduled before hardware is ordered.
- 01
Survey
Wiring, HVAC type, panel layout and PMS interface are documented room by room; retrofit and new-build paths are costed separately.
- 02
Room kit
Each room gets one edge host, relays sized to the actual load, sensing, and the panels, switches and thermostats your interior calls for.
- 03
Commission
Scenes and set-back rules are configured from one platform — no per-room programming on site, no laptop on a ladder.
- 04
Integrate
Room status, check-in/out and energy data flow through the open API to your PMS; the BMS keeps its KNX / Modbus view.
- 05
Measure
Energy reports per room, floor and property. Rules are tuned from the platform without touching hardware.
- 06
Scale
The same room kit and the same platform extend to the next floor, the next building or the next property in the group.
Questions engineers ask
Guest comfort, false-off and retrofit
Will guests notice the system at all?
Set-back only runs when a room is confirmed empty, and comfort rules always take priority over saving rules. When a guest is present the room behaves exactly as it would without the system; the savings come from the hours the room is genuinely vacant.
If a guest sits completely still, will the room go dark?
This is the failure mode that gives occupancy-based energy systems a bad name, so we never rely on a single sensor. CSI sensing, radar and door-contact state are cross-verified before the platform treats a room as empty, and the confirmation delay is configurable per property.
Do we have to replace the HVAC or rewire the rooms?
No. The host bridges RS485, KNX / Modbus and Zigbee, so retrofits work on the existing bus and existing HVAC interfaces. New builds can go wireless where wiring is impractical.
Does this need the cloud?
No. The control platform and the PMS suite run on a local server inside the property, and core automation keeps running with no internet connection. Guest-room data stays inside the building.
How do you connect to our PMS?
Through the open API and documented interfaces. Room status, stay and energy records are exchanged with the property management system your front desk already uses — see the PMS integration page for the data model.
How is the energy saving calculated?
Our calculator uses a transparent baseline of 720 USD per room per year of controllable energy and 95 USD per room of installed cost, adjusted for your electricity tariff and average vacancy. It is a model, not a guarantee — the property survey replaces the assumptions with your meter data.
Model your property before you commit to anything
Send the room count, the electricity tariff and the HVAC type. We return a saving estimate, a room-kit specification and a retrofit schedule.
Talk to us directly
We normally reply within one business day with a configuration list and a schedule.