I'm enough sure.
Here the technical info in a shop:
VTO3211D-P : Postazione esterna IP DAHUA, sensore 1/2.8" 2 Mp, ottica 1.9mm, pulsante meccanico, Lettore Card, Alluminio, IP65 IK08. Alim. PoE 48V - Dahua
And here a video where a 51V HIKVISION poe switch is connected to this VTO: