Introduction

The global smart lock market will reach $8.6B by 2027 (Grand View Research), driven by demand for keyless entry, visitor management, and remote access. However, developers face challenges in balancing:

  • Connectivity reliability (Bluetooth/WiFi dual-mode preferred)

  • Battery efficiency (locks must last 6–12 months)

  • Cybersecurity (encrypted firmware updates)

EBYTE’s Bluetooth 5.0 and WiFi/BLE combo modules solve these with:
✔ E104-BT5032A – Ultra-low-power BLE 5.0 lock controller
✔ E103-W14 – Dual-mode (WiFi 802.11b/g/n + BLE 5.2) for cloud-connected locks
✔ End-to-end AES-128 encryptio

EBYTE Product Recommendations

E104-BT5032A – Bluetooth 5.0 Smart Lock Controller

Key Features:

  • Protocol: BLE 5.0 (2M PHY for faster pairing)

  • Range: 70m line-of-sight (@4dBm)

  • Power Consumption: 1.3μA sleep current → 2+ years on 2xAA batteries

  • Security:

    • MAC binding (blocks unauthorized devices)

    • Dynamic password (OTP for visitors)

  • HID Support: iOS/Android native app control

Visitor Management Functions:

  • Temporary key sharing (expirable via app)

  • Entry logs (timestamps stored in flash memory)

E103-W14 – Dual-Mode WiFi + BLE 5.2 Module

Key Features:

  • Dual Connectivity:

    • WiFi 802.11b/g/n (STA/AP/STA+AP modes)

    • BLE 5.2 (backup when WiFi fails)

  • Cloud Integration: MQTT/AliCloud/Tuya

  • Industrial-Grade: -40°C to +85°C operation

Advanced Functions:

  • Remote unlock from anywhere via 4G/5G

  • Auto-lock scheduling (e.g., lock at 11 PM daily)

System Architecture & Integration

Connectivity Workflow

[User Phone] → [BLE/WiFi] → [E104-BT5032A or E103-W14] → [Lock Motor]                          ↑                   [Cloud Server (Logs/Alerts)]

Key Applications

Use Case

Technical Implementation

Airbnb Guest Access

Host sends time-limited BLE key via app

Office Entry Logs

WiFi module uploads entry data to AWS IoT

Emergency Unlock

Cloud override command via E103-W14

Cybersecurity Measures

  • Firmware OTA updates with SHA-256 signing

  • Brute-force protection (lockout after 5 failed attempts)

Implemenation Guide

Hardware Selection Table

Requirement

Recommended Module

Battery-powered lock

E104-BT5032A (BLE 5.0)

Cloud-connected lock

E103-W14 (WiFi+BLE)

High-security corporate

E104-BT53C3 (BLE 5.2 + 125°C rating)

Certification Support

  • FCC/CE/RoHS pre-certified modules

  • OEM firmware customization available