Cubecell HTCC-AB02 maximum ADC voltage

I found this information about the maximum ADC voltage in the documentation
> section “How to use the ADC pin for AnalogRead (ASR6501)”

ADC input voltage can NOT higher than 2.4V.

What does this exactly mean, e.g. for a 3.3 V analog signal on this input pin? Will 3.3 V treated as 2.4 V and lead to the maximum analog read value what is the same as a 2.4 or 3.0 V signal produces?

Or is it “dangerous” to put a higher signal than 2.4 V on this pin and 3.3 V will kill the pin?

yes, it is.

so you need add the Voltage divider(add the resistance).