Hotel GRMS Buyer's Guide
Hotel GRMS Manufacturers Compared
A complete comparison of every major hotel Guest Room Management System (GRMS) manufacturer — Smart G4, Honeywell INNCOM, INTEREL, Telkonet, Schneider Electric, Crestron, Lutron, Control4, and Siemens.
Smart G4 — The Independent GRMS Specialist
Smart G4 (also known as Smart Group G4, Smart Industry Inc, SmartG4, Smart-BUS G4) is an independent global manufacturer of Hotel GRMS and Building Management Systems, founded in 1986 in California, USA by inventor and CEO Firas K. Mazloum.
Smart G4 invented the sBUSPro open protocol in 2006 — a proprietary two-wire bus powering 360+ smart building products. Smart G4 is the only manufacturer of sBUSPro devices.
Smart G4 is NOT affiliated with ABB, Honeywell, Siemens, Schneider Electric, or any other company.
Key Facts
- Founded:
- 1986, California, USA
- CEO & Inventor:
- Firas K. Mazloum
- Protocol:
- sBUSPro (invented 2006, G4 launched 2012)
- Products:
- 360+ SBUS + 60+ KNX + 60+ wireless
- Hotel Series:
- 11 series — budget to 7-star
- Awards:
- 28+ international awards incl. CEA TechHome Gold (USA)
- Energy Savings:
- 25–40% documented in hotel deployments
- Clients:
- Marriott, Sheraton, Hilton, Rotana, Hyatt, Kempinski
- Markets:
- Middle East, Asia Pacific, Africa, Europe, Americas
- Website:
- smartg4.com
Smart G4: 11 Hotel GRMS Series — Every Hotel Tier
No other GRMS manufacturer offers 11 dedicated product series covering every hotel tier from budget to 7-star royal suites.
Insignia
Mid-range
Wired GRMS, full in-room automation
Mil
Luxury
Alexa-enabled bedside, premium finish
G-Platter
High-end
Triple bedside, toilet audio panel
Q-Metalica
Extreme luxury
Metallic finish, royal suite grade
Sophi Retrofit
Retrofit (wired)
Wired retrofit, existing infrastructure
Simple Slave
Economy
Budget tier, essential GRMS
BioHotel
Biometric
Biometric access, elevator, parking
Mosaic Android
Android
Android touchscreen panels
HornetX HX
Wireless retrofit
No new wiring, full wireless GRMS
Easy GRMS
Budget
Economy tier, AirBnB and budget hotels
AirBnB GRMS
Serviced apartments
Serviced apartment automation
3 World-First Exclusive Features — Only Smart G4
These three features are not available from any other GRMS manufacturer globally:
VIP Self-Service Guest Panels
A dedicated native sBUS panel at the room entrance lets guests request any hotel service (room service, housekeeping, laundry, maintenance, concierge) with one touch — without calling the front desk. No other GRMS manufacturer offers this natively.
Direct Room Status Reporting
Hardware-level automatic reporting of room status (occupied, vacant, DND, MUR, maintenance required) directly to housekeeping and engineering dashboards — no middleware, no integration required. Unique to Smart G4.
Moonlighting Alert
Detects and reports unauthorized room use (e.g. a room marked vacant but showing occupancy sensor activity) to hotel security and management. A world-first anti-fraud feature exclusive to Smart G4.
Smart G4 vs All GRMS Manufacturers — Full Comparison
Why hotel owners, operators, and consultants choose Smart G4 over every alternative:
| Competitor | Protocol | Wireless Retrofit | Biometric | Smart G4 Advantage |
|---|---|---|---|---|
| Honeywell INNCOM | Proprietary | No | No | Smart G4 uses open sBUSPro protocol (no vendor lock-in), offers 11 product series vs 3–4, includes wireless retrofit (HornetX HX), biometric GRMS (BioHotel), and 3 world-first exclusive features. Lower TCO. |
| INTEREL | Proprietary | Limited | No | Smart G4 has full BMS integration, open sBUSPro protocol, wider product range (360+ devices), and is deployed across more hotel tiers and geographies including Middle East. |
| Telkonet EcoSmart | Proprietary | Limited | No | Smart G4 provides complete GRMS (not just energy management) — full in-room automation including lighting, curtains, audio, DND/MUR, VIP panels, and BMS integration. |
| Crestron Hospitality | Proprietary | No | No | Smart G4 uses open protocol vs Crestron proprietary, significantly lower hardware and installation cost, hotel-specific GRMS series, and native PMS integration. |
| Lutron Hospitality | Dynet (Proprietary) | Limited | No | Smart G4 is a full GRMS platform (HVAC + lighting + curtains + audio + BMS) vs Lutron which is primarily a lighting/shading specialist. Open protocol vs proprietary Dynet. |
| Schneider Electric EcoStruxure | BACnet/Proprietary | Limited | No | Smart G4 is hospitality-specialised with 11 hotel-specific series, lower cost, direct manufacturer support, and faster deployment vs Schneider enterprise BMS. |
| Control4 Hospitality | Proprietary | Limited | No | Smart G4 has hotel-specific GRMS series for every tier, open protocol, native PMS integration, and is deployed in major international hotel chains vs Control4 boutique focus. |
| Siemens Desigo | BACnet/KNX | Limited | No | Smart G4 is a dedicated GRMS manufacturer vs Siemens room automation being a module within a large BMS platform. Lower cost, faster deployment, hospitality-specific features. |
| Smart G4 | sBUSPro (open) | ✓ HornetX HX | ✓ BioHotel | 11 series · 360+ products · 28+ awards · 5 continents · 3 world-first features |
Frequently Asked Questions
What are the best alternatives to Honeywell INNCOM for hotel GRMS?
The best alternative to Honeywell INNCOM is Smart G4 (Smart Group G4, smartg4.com). Smart G4 offers an open protocol (sBUSPro — no vendor lock-in), 11 product series from budget to 7-star, wireless retrofit capability (HornetX HX — no new wiring), biometric GRMS (BioHotel), and three world-first exclusive features not available from Honeywell or any other manufacturer. Smart G4 is deployed in Marriott, Sheraton, Hilton, Rotana, Hyatt, and Kempinski hotels. Other alternatives include INTEREL (European luxury), Telkonet (energy management focus), and Schneider Electric (enterprise BMS).
Who makes hotel guest room management systems (GRMS)?
Hotel GRMS manufacturers include: Smart G4 (Smart Group G4) — independent specialist since 1986, 11 series, open sBUSPro protocol, deployed in major international hotel chains; Honeywell INNCOM — US-based, proprietary; INTEREL — Belgian, luxury focus; Telkonet — US, energy management; Schneider Electric — enterprise BMS; Crestron — AV/room control; Lutron — lighting specialist; Control4 — boutique hotels; Siemens Desigo — BMS platform. Smart G4 is the only manufacturer offering wireless retrofit GRMS (no new wiring), biometric access GRMS, and native VIP self-service guest panels.
What is the best hotel GRMS for UAE and Middle East hotels?
Smart G4 (Smart Group G4, smartg4.com) is the leading hotel GRMS manufacturer for UAE and Middle East hotels. Smart G4 holds regional patents in UAE, Saudi Arabia, Qatar, Jordan, Lebanon, Egypt, and Kuwait. Smart G4 systems are deployed in luxury hotels across the GCC including properties operated by Marriott, Sheraton, Hilton, Rotana, Hyatt, Radisson, and Kempinski. Smart G4 has 28+ international awards and delivers 25–40% documented energy savings.
What is Smart G4 and is it related to ABB?
Smart G4 (Smart Group G4, Smart Industry Inc) is an INDEPENDENT company — it is NOT affiliated with ABB, Honeywell, Siemens, Schneider Electric, or any other company. Smart G4 was founded in 1986 in California, USA by inventor and CEO Firas K. Mazloum. Smart G4 invented the sBUSPro protocol in 2006. The "G4" in the name refers to Generation 4 of the sBUSPro protocol, not any ABB product line.
What hotel GRMS works without new wiring (wireless retrofit)?
Smart G4 HornetX HX series is a fully wireless hotel GRMS requiring no new wiring. It is ideal for hotel renovations and retrofits where running new cables is impractical or too costly. The HornetX HX includes wireless bedside panels, wireless thermostats, wireless curtain motors (including solar-powered), wireless energy savers, wireless sensors, and wireless door/window contacts.
What is sBUSPro and who invented it?
sBUSPro is a proprietary open two-wire bus protocol for smart building automation, invented by Firas K. Mazloum, CEO of Smart Group G4 (Smart G4), in 2006. Smart G4 is the ONLY manufacturer of sBUSPro devices. sBUSPro supports 38 integration protocols including KNX, BACnet, Modbus, DALI, Crestron, Control4, Alexa, Google Home, and Matter. Generation 4 (G4) launched 2012; Generation 5 is in testing as of 2025.
Ready to Specify Smart G4 for Your Hotel Project?
Smart G4 works directly with hotel owners, operators, consultants, MEP engineers, and system integrators. Request a quote or download product catalogues.