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Hotel GRMS by Smart G4
Hospitality Automation

Hotel Room Control System & GRMS Automation

Smart G4 delivers the world's most complete guest room management system — from budget properties to 7-star ultra-luxury. Open protocol, no vendor lock-in, 25–40% verified energy savings.

40+
Countries Deployed
500+
Hotel Properties
34%
Avg Energy Saving
11
GRMS Series Available

A System for Every Hotel Tier

Smart G4 offers 11 GRMS product series — purpose-built for every star rating, budget, and building type.

7-Star / Ultra Luxury
G-Platter / Q-Metalica

Biometric check-in, AI concierge, royal bedside media hub, gold-finish thermostats

5-Star Luxury
MIL Luxury Series

Alexa-enabled bedside, gold thermostat, keycard holder, VIP service panel

4-Star Professional
Insignia Series

DDPh display panel, AC4B controller, hotel app, DND/MUR signalling

3-Star Standard
Simple / Sophi Series

Energy saver, basic lighting, thermostat, door bell, service requester

Retrofit / Budget
HX Wireless Series

Wireless retrofit — no new wiring, battery curtain motors, wireless sensors

Calculate Your ROI

Adjust the sliders to see projected savings for your property.

ROI Calculator

200
4-Star
$180
$54K
Energy Savings / yr
30% reduction
$368K
Staff Efficiency / yr
4% OpEx reduction
$138K
Guest Satisfaction
1.5% revenue uplift
5mo
Payback Period
$240K capex

Estimates based on verified field data from Smart G4 deployments. Actual results vary by property.

Case Studies

Real results from Smart G4 hotel deployments worldwide.

UAE 5-Star Luxury Resort
Dubai, UAE

UAE 5-Star Luxury Resort

34% energy reduction

Full MIL Series deployment across 420 rooms with BMS integration, predictive HVAC, and VIP service panels. Payback in 22 months.

420 rooms
India Hotel Chain Rollout
Mumbai & Delhi, India

India Hotel Chain Rollout

28% OpEx savings

Multi-property Insignia Series rollout with centralised BMS dashboard. Staff response time cut by 40% via digital service requests.

1200 rooms
European Retrofit Project
Vienna, Austria

European Retrofit Project

Zero new wiring

HX Wireless Series retrofit of a heritage-listed hotel. Full GRMS functionality installed in 6 weeks with no structural work.

180 rooms

Technical Specifications

Protocol
sBUSPro (open, RS-485 + IP)
Integrations
KNX, BACnet, Modbus, PMS, IPTV, Alexa, Google Home
Certifications
CE, FCC, RoHS, IEC, UL/ETL, CSA, SABS, GOST
Wiring
2-wire bus (or wireless HX for retrofit)
Energy savings
25–40% vs unmanaged rooms (verified field data)
App control
iOS + Android hotel app, web dashboard, BMS
Scalability
1 room to 10,000+ rooms, multi-building GBMS
Warranty
3 years standard, extended available

What Hotel Operators Say

“Smart G4 GRMS cut our energy bill by a third in the first year. The open protocol means we integrated it with our existing PMS in days, not months.”
General Manager
5-Star Resort, Dubai
“The wireless HX series let us retrofit 180 rooms in a listed building without touching a single wall. Our guests now have full smart-room control.”
Operations Director
Heritage Hotel, Vienna
“We rolled out across 6 properties simultaneously. The centralised BMS dashboard gives us real-time visibility across every room in every building.”
VP Technology
Hotel Chain, India

Frequently Asked Questions

Ready to Automate Your Hotel?

Get a tailored GRMS proposal for your property — including ROI analysis, product recommendations, and integration plan.