Concerning certain EU868 devices that exhibit a receiving sensitivity issue. The primary reason would be that the noise is not isolated effectively. After extensive testing and debugging, we developed a filter capable of effectively reducing noise. Users in need of assistance can now apply for free (including the filter itself and shipping costs, but not including tariffs and delivery fees in remote areas that may occur after the customs of the destination country).

Kindly copy the content and update it with your device information and send it to the following email address:

Hotspot's surname:

MAC address for Ethernet:

Order no. :


Address of the post office:

Cell phone:

Correspondingly, please attach your LoRa logfiles at the conclusion of the email’s content.

If you have more than one device, please use commas “,” to separate messages. Within two business days, we will respond and make a determination based on the LoRa logs.

Application conditions

  • EU868 version Heltec Indoor Hotspot shipped before December 10th, 2021

Application time

  • From today to January 31st, 2022.

Timeline for delivery

  • Shipments will begin on January 20th, 2022;
  • They will be made in the order in which they are received.

We HELTEC expresses our sincere apologies for the diminished customer experience associated with the use of the product as a result of the aforementioned factors. Simultaneously, in order to provide our loyal customers with the best possible product experience, we invite everyone to provide timely feedback on how we can improve our service.