HDL Guest Room Management System (GRMS) Solution

NGÀY ĐĂNG 22/04/2026

Tiên Võ

In modern hotel operations, guest experience and operational efficiency no longer depend on individual devices, but on how the entire system is connected and automated.

That is why the Guest Room Management System (GRMS) by Legrand is developed as a centralized management platform for hotel rooms.

What is GRMS in Real Hotel Operations?

Legrand’s GRMS can be simply understood as:

A system that allows hotels to manage the entire room - from lighting, air conditioning, and curtains to room status - through a centralized control system integrated with PMS/BMS.

In real operations, GRMS enables:

• Lighting control (ON/OFF, dimming)
• Curtain control
• HVAC management based on room status
• Scene activation (Welcome, Sleep, Relax…)
• Room status management: DND / MUR / Occupied / Unoccupied
• Integration with Hotel PMS and Building BMS

→ GRMS does not just control devices, but controls the operational state of the entire room.

In-Room System Architecture

In the GRMS solution by Legrand, each hotel room operates as a complete system with multiple coordinated devices.

Room Controller Unit (RCU)

This is the core processing unit of the room, responsible for:

• Lighting control
• HVAC control
• Curtain control
• Receiving signals from sensors and switches

RCU can be deployed in different configurations (BACnet / KNX) depending on the project.

Key Card & Room Sensors

• Key card identifies occupancy status (guest present / absent)
• Motion, door, and window sensors validate actual occupancy

→ These two data sources allow the system to accurately determine room status.

Bedside Panel

The main interface for guests to:

• Adjust lighting
• Select room scenes
• Request services (DND / MUR)
• Control curtains and in-room devices

Thermostat for HVAC Control

• Allows guests to adjust room temperature
• Sends data back to the system for HVAC optimization

How GRMS Controls a Hotel Room

Instead of operating individual devices, Legrand’s GRMS works based on:

scenarios and room status

Operational example:

• Check-in → activates Welcome mode
• Guest enters → lighting and HVAC adjust automatically
• No motion detected → system reduces energy consumption
• Guest leaves → room switches to energy-saving mode

→ Everything operates automatically based on room status, reducing reliance on manual control.

GRMS Integration with PMS and BMS

A key strength of Legrand’s solution is system integration capability.

PMS Integration

• Receives check-in / check-out signals
• Automatically activates or resets the room

BMS Integration

• Sends real-time room status
• Supports centralized monitoring of building systems

→ The system supports widely used building standards:

• BACnet
• KNX

→ Ensuring seamless integration in multi-vendor environments.

Legrand Electrical Devices for Premium Hotels

In hotel rooms, electrical devices are not just finishing elements, but:

the direct interface between guests and the entire control system

Legrand provides a complete set of in-room devices, including:

• Switches and power outlets
• Bedside control panels
• Key card switches
• DND / MUR indicators and controls
• HVAC thermostats

Lighting and curtain control modules are integrated within the control system, ensuring synchronized room operation.

Arteor

• Premium design for 4–5 star hotels
• Customizable to match interior concepts (colors, materials, branding)
• Suitable for luxury and branded hotel projects

Galion

• Minimalist and modern design
• Multiple finish options
• Consistent with in-room system design

→ Devices not only ensure aesthetics, but also consistency between user experience and system operation.

KPS - Official Distributor of Legrand Solutions in Vietnam

In modern hotel operations, isolated systems such as HVAC, lighting, or ELV are no longer sufficient for optimal performance.

What is required is an integrated architecture where room status, technical systems, and operational data are fully connected.

KPS approaches this by:

Not just controlling devices in the room, but optimizing the entire hotel operation.

KPS Solution Approach

In hotel projects, KPS builds systems based on the following architecture:

• GRMS: Room status management (occupied, unoccupied, DND, MUR...)
• HVAC: Controlled based on occupancy and usage behavior
• BMS: Central monitoring and system coordination
• EMS: Energy analysis and optimization based on real data

→ These systems operate as a unified platform rather than isolated components.

Technology Platform & Integration Capability

KPS implements solutions based on open platforms from:

• Legrand - GRMS & building infrastructure
• Johnson Controls (EasyIO) - BMS & HVAC control
• ABB - Electrical and energy systems

Integrated with:

• Security: Bosch, i-PRO, CNB
• Access control & parking: MAG, Kumahira
• Fire protection: GST, Janus, Simplex, Bosch
• Integration platform: Genetec

→ Ensuring flexible operation without vendor lock-in.

Project Experience

With over 16 years of experience and 800+ projects, KPS has implemented:

• 70+ high-rise buildings
• 600+ residential projects
• 140+ factories and industrial zones
• Along with hotels, resorts, and large-scale infrastructure such as ports, airports, and smart cities

This experience enables KPS to:

• Optimize HVAC based on room occupancy
• Integrate PMS - GRMS - BMS
• Reduce long-term operational costs for hotels

Contact KPS for consultation and tailored solutions for your hotel project.