Light Hotspot Overview

Light Hotspot

This is a work in progress and is in development. Specifications listed below are subject to change.

Quick Specifications

SpecificationNebra Light Hotspot
CasePlastic (ABS)
Ingress ProtectionIP40
Dimensions150x150x50 mm (Excluding Antenna)
Weight0.4 Kg
Power Requirement9-16V DC @ 12W
Average Power Consumption~8W*
Annual Power Consumption~70kWh
Maximum TX Power24-27dBm**
Network Connectivity2.4Ghz 802.11N Wi-Fi, 10 Mbps Ethernet
Antenna ConnectionRP-SMA Female
Rated Ambient Temperature20-30C
Base SOMRaspberry Pi Zero
CPU SpecificationBroadcom BCM2835, ARM11 (ARMv6) 32-bit SoC @ 1GHz
* Average Power Consumption Measured At Mains,
** Maximum TX Power may be capped to a lower amount in some regions.

Package Contents

  • 1 X Nebra Light Hotspot
  • 1 X LoRa Antenna
  • 1 X International 12V DC Power Supply

Block Diagram

Indoor Hotspot Block Diagram

Supported Regions

The Nebra Light Hotspot comes in three hardware versions:

FrequencySupported Regions
433 MHzEU433
470 MHzCN470
868 MHzEU868, IN865, RU864
915 MHzUS915, AU915, AS923, KR920

The frequency is set upon initialisation by the Helium Network.

Antenna Specifications



The Nebra Indoor Hotspot is 150x150x50MM In size when nothing is connected.

Approximately 175x150x50MM space is required when accounting in space required for connectors.



  1. 9-16V @ 15W DC 6.5MMx2.0MM Barrel Jack
  2. LED Indicator.
  3. Interface Button
  4. RP-SMA LoRa Connector
  5. Ethernet Connector

Status Indicator

The Nebra Indoor Hotspot has a status indicator as shown above.

The Top LED will act accordingly:

  • Off - Software has not started yet.
  • On - Operating as normal
  • Slow Blinking - Bluetooth Pairing is enabled
  • Fast Blinking - There is potentially a fault. Please check diagnostics page.

The Bottom LED acts accordingly:

  • Off - Unit is receiving no power.
  • On - Unit is powered up.


The Nebra Indoor Hotspot has a button on the back of the unit.

This is used to re-enable bluetooth pairing on the hotspot, hold the button in for approximately 15 seconds then release to start pairing. The top light should start blinking slowly if successful.


The Nebra Hotspots run a customised software to provide high reliability and ensure your units are as up to date as they can be.

Approximately your hotspot will update once a week in an automatic process, we will announce updates via various social media platforms when they happen.

The software is open source at


We are working on getting the Nebra Indoor Hotspot certified in multiple regions. As we have results from the certification process we will post them here.

Light Hotspot

Light Hotspot DatasheetTBC
Light Hotspot 3D Model LidLight Hotspot Case Lid 3D Model .STL Format
Light Hotspot 3D Model BaseLight Hotspot Case Base 3D Model .STL Format

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