Hotel Guest Room Management System (GRMS)
INTEREL’s hotel guest room management system (GRMS) gives guests effortless control of light, climate, and curtains — and helps your team respond faster. One clear interface. No manuals on the wall.
Trusted by industry-leading brands and owners:
And many more…
Imagine the Perfect Hotel Room. We’ll Help You Make It Happen.
We build the most beautiful, user-friendly, and technologically advanced guest room controls for international hospitality brands.
With INTEREL hotel guest room controls, guests set temperature, lighting, and shades in one tap — using panels that read clearly the first time, in any language your brand needs.
Trusted by World-Class Hotels in Over 45 Countries.
Why Hotels Choose INTEREL’s Guest Room Management System
For countless reasons, but if we had to pick just one, we would say:
Because every integration is built with a deep understanding of hospitality operations and guest experience. This results in bidirectional integrations that exchange data points and events that make all the difference.
Occupancy-Based Energy Management
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Are you looking for a solution to the famous double-occupancy situation, when one guest leaves the room?
Search no more!
We have the most advanced EMS algorithms and richest sensor data to determine occupancy.
Faster Guest Service from Smarter Room Controls
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Our GRMS integrates with your Workflow Systems, instantly updating the status of the rooms.
When a guest taps on Privacy or Service, this information is immediately shared with your housekeeping staff, allowing them, for example, to prioritize empty rooms for cleaning.
Optimize workflow, save time, and provide amazing service for your guests.
Door Lock Integrations and Virtual Infrastructure
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We integrate with leading door lock brands to enhance security and convenience.
With a single click, you can extend guest stays, change rooms, or deactivate lost staff cards.
Receive proactive low-battery alerts and real-time audit logs.
Leverage door events combined with our energy-saving algorithms, eliminating the need for door contacts. Embrace digital key solutions, enabling guests to access their rooms via smartphone.
IPTV Integration
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Nowadays, large-screen TVs in hotel rooms consume more energy than the lights.
Our GRMS uses occupancy detection to automatically turn off the TV in empty rooms, reducing energy consumption and promoting sustainability.
Real-World Solutions for Smarter Hotel Operations
See how INTEREL's unique hospitality intelligence solves common hotel challenges.
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![Privacy use case - INTEREL]()
Protect Guests' Privacy with Conditional Access
The challenge is staff accidentally walking into occupied rooms, disturbing guests. This happens because door locks don't know whether someone is inside the room. INTEREL solves this with advanced presence sensing and door lock integration, which work together to temporarily restrict staff access when a guest is in the room. The result is enhanced guest privacy, no unpleasant encounters, and a better experience for guests and staff alike. Available with selected Onity and Vingcard (ASSA ABLOY) models and firmware. Please confirm compatibility with INTEREL before ordering.
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![**Door knocking:** A hotel guest interrupted by housekeeping at the door, then a room-status list that shows empty rooms first so staff can skip occupied ones.]()
Eliminating Unnecessary Door Knocking
The challenge is guests being interrupted by housekeeping knocking on their door. This happens because staff don't know which rooms are empty, so they have to knock on each door. INTEREL solves this with advanced presence sensing that integrates with housekeeping workflows, providing real-time room status and prioritizing empty rooms. The result is improved operational efficiency, fewer guest interruptions, and more productive housekeeping teams.
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![Water damage: A hotel bathroom leak under a sink, then a smart leak sensor tied to an automatic shut-off valve that stops the water before the room is damaged.]()
Preventing Water Damage Before It Spreads
The challenge is that small water leaks can quickly escalate into major water damage, disrupting operations and affecting guest rooms. This happens because leaks often go unnoticed until significant damage has already occurred. INTEREL solves this by connecting smart leak sensors to automatic shut-off valves, cutting the water supply immediately when a leak is detected. The result is that leaks are stopped instantly, reducing property damage and operational disruptions while giving hotel operators peace of mind.
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![**Humidity:** A guest arriving to a stale hotel room, then humidity monitoring that restores fresh, comfortable room conditions.]()
Protecting Rooms from Excess Humidity
The challenge is unoccupied rooms developing excessive humidity, leading to stale odors and an unpleasant guest experience. This happens because humidity can build up unnoticed when rooms remain vacant for extended periods. INTEREL solves this with continuous humidity monitoring that detects elevated levels and triggers corrective actions before room conditions deteriorate. The result is fresher rooms, improved room quality, and better protection of interiors and finishes.
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![Description of INTEREL's Energy Management System for Hotels]()
Saving Guest Room Energy Without Compromising Comfort
The challenge is hotels wasting significant energy heating or cooling empty rooms. This happens because room systems often operate on fixed schedules or manual settings that do not reflect real occupancy. INTEREL solves this by optimizing room conditioning using PMS data, occupancy sensing, and door lock events to align energy use with actual guest presence. The result is reduced energy consumption, lower operating costs, and consistently comfortable guest rooms.
A Connected Hospitality Ecosystem
INTEREL's GRMS integrates with leading PMS, door locks, and hotel systems.
PMS Integration
FSPMS by Marriott
Fosse by Marriott
Lightspeed Galaxy by Marriott
Monitoring and Control Through API
Mobile:
Arowana
Voice:
IPTV:
Hotel Dashboard:
Workflow Management
Door Lock Networking
Onity
Wireless Sensors and Controls
Asset Tracking and Staff Protection
Monitoring and Control Through BMS
Honeywell
We Blend in Better Than Anyone Else.
From elegant tempered glass panels to premium metallic keypads with push buttons,
our interface portfolio offers multiple design approaches to match every hospitality concept.
Choose from 700+ RAL colors.
Find the Perfect Match.
Tempered Glass Panels
Touch Icons
Up to 9 icons with optional text
Customize typography and language. Add engraved patterns.
Full-body, laser-engraved icons
Curated color palette in satin or brushed finishes.
Premium Metal Keypads
Mechanical Buttons
1 to 8 buttons with icons, text, or both.
Customize typography and language
Outlined, laser-cut icons
How We Work With Brands and Designers
Option 1
Our Best-Of Library
Choose from our icon library, with hundreds of copyright-protected icons, growing daily.
Option 2
Bespoke Icon
We can create bespoke icons to match the actual FF&E of the project and complement our library.
Option 3
Brand Library
We can use your own icon set. Share your icon library with us so we can use them in your project.
Option 4
Bespoke Library
We create a set of icons based
on your brand identity in collaboration
with your design team.
Interfaces Built for Hospitality, Not Borrowed from Homes.
In hospitality, usability needs to be instant. Guessing, tapping random icons, or needing staff assistance can quickly damage the experience. Our system leverages nearly two decades of hospitality expertise, resulting in truly intuitive interfaces and a greater guest experience
How to spot solutions designed
specifically for hospitality?
Self-Explanatory Room:
Zero Learning Curve
We combine
Universally Recognizable Icons
+
Legible Text
To achieve a truly intuitive guest interface.
Design Your Perfect Guest Experience.
We’ll Make It Happen.
Our system is fully programmable, allowing you to manage HVAC, lighting, curtains, and guest services with maximum flexibility.
The flexible logic of our system offers limitless design possibilities tailored to every unique room configuration: A King Room with a balcony? A cozy suite with a living room? How about a multi-floor Presidential Suite? Our system scales and delivers on the most complex control philosophies.
Convenient and frustration-free is key
to the great experiences you are creating.
One Platform, Countless Designs.
With endless design and control philosophy customization options, our GRMS will always be as unique as the properties and experiences you're crafting.
Explore Our Range of Intuitive and Elegant User Interfaces
Frequently Asked Questions
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Yes. INTEREL designs its hotel guest room controls so guests understand them without instructions. Universally recognizable icons are paired with legible text, so each function reads clearly the first time, in any language your brand needs. Our interfaces are built for hospitality, not borrowed from homes, and draw on almost two decades of experience with guests, operators and housekeeping teams. The result is a self-explanatory room, with no manuals on the wall and no instructions next to the thermostat.
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Yes, the panels can be tailored to your brand identity and interior concept, with bespoke icons and custom typography and language. FLAT 2 offers more than 700 RAL colors. ETERNA is available in 6 finishes, with the option to match your desired color and finish when a physical sample is provided.
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Two guest-facing interface families are available, FLAT 2 and ETERNA, both powered by INTEREL's Room Control Unit. Each family covers the whole room: keypads or glass switches, thermostats, double panels, extended panels with optional international power options, and corridor panels.
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The main difference is the material and how guests use it. FLAT 2 is a tempered glass touch panel with up to 9 icons. ETERNA is a metallic keypad with 1 to 8 tactile push buttons and Kandela, a built-in night light. Both carry the smart hotel automation capabilities INTEREL is known for.
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INTEREL GRMS shares data both ways with leading PMS platforms. The room knows when a guest checks in or out, so INTEREL can align room conditioning with real occupancy and keep rooms comfortable when guests arrive. For the full list of supported systems, see the integrations section on this page.
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Yes, INTEREL integrates with leading door lock brands, including Vingcard (ASSA ABLOY), dormakaba, SALTO and Onity, enabling hospitality-specific automations. Your team can extend guest key cards, change rooms, or deactivate lost staff cards with one click. They can also receive proactive low-battery alerts and real-time audit logs. Door lock events also feed INTEREL's energy-saving algorithms, removing the need for door contacts, and digital key solutions allow guests to access their rooms via smartphone.
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A BMS manages a building's central systems, while a GRMS handles hotel room automation inside each guest room: lighting, climate, curtains and service requests. INTEREL GRMS connects with your BMS, so engineering teams can monitor and control guest rooms from the platform they already use
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A hotel guest room management system connects guest-facing controls — lighting, climate, curtains, and service requests — with hotel operations and building systems. INTEREL GRMS is built so guests get it instantly and staff see room status in time to act.
Let’s work together to create truly greater guest experiences for your unique properties.
Ready to plan hotel GRMS for your next opening? Talk to INTEREL about guest room controls that fit your brand, room types, and integrations.