Which Stuka Has the Siren War Thunder?

Thank you snail lords! Note that only the Ju-87 B2 can use the sirens.

Does the Ju 87 R 2 have a siren?

from its attack dive even if the pilot blacked out. It was also equipped with a siren, the Jericho-Trompete ("Jericho Trumpet"), which in a dive would unleash a morale crushing whine.

What Stukas have sirens in War Thunder?

Only the Ju-87 B-2 have the siren in-game (you can see it on the model).