Re: WiFi range ...

On Sun, 2 Aug 2026 15:00:53 +0100, The Natural Philosopher wrote:

> Resistive Sensors ===========
> 
> Structure: A pair of electrodes is coated with a material like a
> conductive polymer or salt.
> 
>   Action: Absorbed moisture breaks down into ions, which changes the
> electrical resistance across the coating.
> 
>   Output: Lower resistance means higher humidity, which the device
> calculates into a reading.

fwiw, that's the technique used in the DHT11 and other cheap sensors.