Interesting new mechanic with the sound sensors monitor on the truck.

[Kai]

Since you can literally 'hear' anything the sound sensors picks up on the truck, this works for a good trick to wait for ghost writing since it always emit scribbling sound.

As well as for certain ghosts like Myling, which does not emit footsteps during a hunt unless heard with a parabolic or sound sensor.

Tier 2 EMF makes a different noise when it picks up EMF level 5 as well I think, which you can take advantage using the sound sensor.

[Kai]

A bonus addition:
The motion sensor now picks up items or ghosts, not players, meaning there will never be accidental trigger of motion sensors, so if you hear the beep even when outside near the truck then it's triggering it.

I think if someone speaks to the spirit box and the audio plays, you can hear it in the truck as well? But if ghost prompt may play by itself randomly you might be able to use the truck to safety determine that (the sound sensor got a massive range when you expand it, allowing you to hear every single active device from the truck).

[Mandemon]

You can also apparently switch between wide mode and narrow mode on devices, by clicking on the symbol on the soundboard

[Kai]

Tier 2 EMF can't be heard from the sound sensor anymore.