A woman impersonated a security worker to get inside a Bronx apartment, where she and three men robbed the place and assaulted one of the victims, police said Friday.

The intruder knocked on the door of an apartment at Wood Road and West Avenue in Parkchester around 3:30 p.m. Tuesday and identified herself as a representative from ADT Security Systems, police said.

Three other men appeared from behind the impersonator and all four shoved their way into the apartment and scoured the place, according to police.

One of the suspects slugged the 53-year-old victim several times in the face and then snatched an iPhone from a second victim, 33, inside the apartment, police added.

The robbers got away with a Louis Vuitton bag, two iPads, a Samsung tablet, and a wallet containing credit cards and $110 before fleeing the apartment, police said.

The 53-year-old woman suffered cuts to her nose and was taken to Lincoln Hospital where she was treated and later released.