T-Echo Card

Thank you for your feedback after using our product.
Regarding the power consumption issue, we would like to better understand which firmware version you are currently using.
Our engineering team has prepared a detailed power consumption test table that records power usage across various operating modes—all designed and tested in accordance with the low-power specifications of the NRF52840.
We also invite you to compare our data with the test results available on our GitHub repository.

As for the signal, could you kindly clarify whether you are referring to LoRa, Bluetooth, or GPS? The LoRa output power strictly follows the official LoRa standard parameters, and the spring antenna we use is designed to match the standard wavelength specifications. For GPS, we have implemented a large-volume ceramic antenna to ensure optimal performance.
Bluetooth power and antenna design also adhere to the standard reference design parameters for the NRF52840.

Regarding the button appearance: since the product meets IP66 waterproof standards, we had to apply some adhesive to ensure proper sealing. Because the enclosure is transparent, the adhesive may be visually noticeable. We appreciate your understanding on this matter.

Concerning the solar panel: due to spatial constraints within the product design, the solar panel is intended solely as an auxiliary power source and is not designed to serve as the primary charging method.

We genuinely value your detailed feedback, as it provides crucial insights that will help us improve and refine our products for future iterations. If you could share more specific information about the features or parameters you are referring to, we would be very grateful—it will directly support our ongoing efforts to deliver better products.

Thank you again for your time and input. We look forward to any further details you can provide.