This link is also helpful: https://www.cnet.com/home/smart-home/amazon-sidewalk-will-create-entire-smart-neighborhoods-faq-ble-900-mhz/ https://www.cnet.com/ho

This link is also helpful: https://www.cnet.com/home/smart-home/amazon-sidewalk-will-create-entire-smart-neighborhoods-faq-ble-900-mhz/ https://www.cnet.com/home/smart-home/amazon-sidewalk-will-cr... It's interesting that only a few devices, mostly the newer ones, are capable of using LoRa. All the older ones are just BLE (i.e. technically <100m range, but in real world conditions probably 10-30m max).