30 bar sensor depth

30 bar sensor.
will it stop showing depth below 300m or will it stop being so accurate?
I plan to build something for 400m. and there is so much price difrence from 30 to 100 bar sensor.
I do not need it super accurate.

We lifted this specification from the datasheet. It’s not clear what the output will do beyond 300m, but the unit itself is rated to 500m without damage.

The output beyond 300m probably is just nonlinear relative to the rated range, and so the same specifications will not apply to the 300-500m range output.