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Slightly off topic but I just bought an inexpensive water leak monitor set and it uses LoRa — I’ve had range problems with other bands “Extremely Long Range: Powered by LoRa technology, the long-range low-power system offers the industry’s longest receiving range (1/4 mile). Areas such as basements and sheds connect up to 100 sensors to deliver product information smoothly.”



LoRa sounds like a good idea for water sensing in particular. Water catches all radio signals at 2.4 GHz and turns the waves into heat (that's why microwave ovens work, after all), so spread-spectrum transmission seems like a good way around that issue. I would test the transmission range in a bathtub.




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