What is the performance difference between T1-M and T1-2S?

The main difference between T1-M and T1-2S lies in the antenna type, where T1-M uses a ceramic antenna suitable for compact structures, while T1-2S-NL uses an onboard antenna suitable for loose structures. Generally, there is no significant difference in performance, but in cramped spaces or environments with a lot of surrounding metal, it is recommended to use an external antenna. Regarding wireless performance, the Wi-Fi transmission power and reception sensitivity of the T1-M module in different modes can be referenced in the specification sheet, with typical transmission power being 17 dBm and reception sensitivity being -88 dBm. When choosing a new model, you can select the appropriate module based on the compactness of the structure. From the shipment volume perspective, the T1-U module has a much larger shipment volume than the T1-M, so it is recommended to use T1-U.