An off-duty FDNY dispatcher was busted with a stash of explicit videos of girls as young as 8, cops said.

Joseph Perrone, 59, was arrested around 5 p.m. Wednesday, after investigators conducting a search warrant in his Staten Island home and found the vile videos, cops said.

He was arrested and charged with promoting a sexual performance of a child less than 17, and possession of a sexual performance by a child, authorities said.

Perrone, a chief alarm dispatcher, has been with the FDNY for 25 years, the department said.

Once arraigned, he will be suspended without pay, according to the FDNY.