Smart Hotel System

Smart Hotel Door Information Display

Wi-Fi Connected E-Ink Display for Smart Hospitality

Silentronics developed a low-power Smart Hotel Door Information Display that automatically synchronizes room status, guest information, housekeeping requests, and check-in/check-out details with the hotel’s Property Management System (PMS). The solution combines embedded hardware, cloud connectivity, and intuitive mobile applications to provide a modern digital room management experience.

☞ System Architecture

The Smart Hotel Door Display securely connects the hotel’s PMS or cloud backend with Wi-Fi-enabled e-paper displays, enabling automatic real-time room information updates.

Supported Integrations

• Hotel PMS & Booking System
• Housekeeping Management
• Guest Check-In / Check-Out
• Room Status Management
• REST API Integration
• OTA Device Management

☞ Hardware Development

The hardware platform was designed for reliable operation, low power consumption, and seamless deployment in hospitality environments.

Core Components

• ESP32-S3 Wi-Fi MCU
• 4.2″ E-Ink Display (400 × 300)
• USB Type-C Power
• Optional 15000mAh Li-ion Battery
• Status LED
• Custom PCB
• Wall Mount Enclosure

☞ Firmware Development

Custom firmware provides secure communication, automatic synchronization, and optimized power management.

Firmware Features

• Wi-Fi Provisioning
• Secure HTTPS Communication
• REST API Client
• JSON Data Parsing
• Display Refresh Optimization
• Deep Sleep Mode
• OTA Firmware Updates
• Device Monitoring

☞ Cloud Dashboard

A centralized web dashboard enables hotel administrators to monitor and manage all connected room displays.

Dashboard Features

• Live Room Status
• Guest Information
• Check-In / Check-Out
• Device & Battery Monitoring
• OTA Firmware Management
• Activity Logs

☞ Mobile Application

A dedicated mobile application allows hotel staff to update room information instantly.

Mobile Features

• Update Room Status
• Guest Information
• Housekeeping Requests
• Maintenance Mode
• Cleaning Status
• Real-Time Synchronization
• Push Notifications

Compatibility

• Android
• iOS

☞ Challenges Solved

• Eliminated manual room signage.
• Enabled real-time Wi-Fi updates.
• Optimized battery life using deep sleep.
• Designed a scalable cloud-connected architecture.
• Simplified hotel staff operations.

☞ Project Highlights

✓ End-to-End Product Development
✓ Embedded Hardware & PCB Design
✓ ESP32 Firmware Development
✓ E-Ink Display Integration
✓ Cloud Dashboard Development
✓ Android & iOS Application
✓ OTA Firmware Updates
✓ Custom Enclosure Design
✓ Manufacturing-Ready Prototype

☞ Tools & Technologies

• ESP32-S3 • E-Ink Display (4.2″) • Wi-Fi 2.4GHz • HTTPS / REST API • Embedded C/C++ • FreeRTOS • JSON Parsing • TLS/SSL Security • Android & iOS • Cloud Backend • OTA Updates • PCB Design • 3D CAD Enclosure