eLR100 - The secure LoRaWAN Module, powered by MS500

The ultra low power secure LoRa Module is powered by the company own-designed IoT security MCU, MS500. The module provides extended security features over the conventional LoRaWAN by utilizing the secure key management, secure boot, and secure storage functions.



Product Features

Reliable Performance with LoRa Certifications

  • eWBM is a member company of LoRa Alliance.
  • The eWBM’s secure LoRa module is certified by LoRaWAN® for worldwide four regions: Korea (KR920-923), Asia/Japan (AS923), EU (EU863-870), and USA (US902-928).

Easy to build the IoT infrastructure

  • The P2P technology on LoRaWAN allows to deliver data in a point-to-point relay structure. It is powerful solution for locations where it is difficult to access to install gateways or power supplies. (e.g. sewer or manhole area, etc)
  • IoT infrastructure can be easily constructed by using the AT+Command controls or the API implementation in SDK environment.

Long Range of distance coverage

  • The distance range of the LoRa module reaches up to 10 Km in open space.

Acquired EMI certifications from various standards

  • Completed KC/CE/FCC/TELEC Certifications.
  • ANATEL (Brazil) Certification is currently in progress.

Extended Security Feature

  • The eWBM’s LoRa module is powered by the company own-designed IoT security MCU, MS500. The secure parameters for executing LoRaWAN protocol are safely stored in the hardware protected Trust Zone. The secure boot and secure storage functions are supported to make LoRaWAN even more safe.



Product Specification [Model: eLR100-UL-00]

MS500: eWBM’s own-designed low power security MCU

  • Cortex M0
  • Hardware based security system
  • UART, SPI, and I2C Interfaces

Semtech SX1276

  • Receiver Sensitivity : up to -136  dBm
  • Frequency Range : 863MHz ~ 928MHz
  • Output power : +14dBm, +30dBm (North America)
  • Optimized RF Interface : 50 Ω

UART Interface

  • Supports the AT+Command controls for LoRaWAN

Module Size and Supply Voltage

  • Size : 15.0 x 22.0 x 2.3mm
  • Supply Voltage Range : 3.0V ~ 3.6V

Block Diagram of LoRa Module

LoRaWAN Network Architecture

  • Gateway devices must be located to collect RF data from End Node.
  • End Nodes can communicate only with designated Network Server.
  • With LoRaWAN protocol, the End Nodes communicate with Gateway devices in a reliable and secure way with encryption function.

LoRa P2P Use Case

• LoRa P2P Use Case 1 : Small scale of LoRa Network without gateway
• LoRa P2P Use Case 2 : Fire detection and defense system

eWBM’s LoRa P2P Network Concept

  • Gateway functions are used in a limited way (i.e. 1 Ch only) in order to collect RF data
  • Apply the LoRaWAN Downlink Rule to End Node communication which is originally available only between Network server and Gateway communication.
  • LoRaWAN Uplink Rule is not used in P2P network.
  • When LoRaWAN ABP mode is used, the address of each End Node can be transmitted through Device Address. Session Keys (AppSKey, NetSKey) are shared so that data is securely encrypted during transmission.
  • By having the P2P context still hold the standard LoRaWAN protocol as shown above, the regional radio frequency policies are satisfied for geographical countries.
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