Michael Jackson had child sex alarm?

Michael Jackson allegedly had a child sex alarm.

According Wade Robson, who is claiming the late pop star molested him, Michael possessed a warning system.

The King of Pop reportedly installed a device which told him when someone came within 30 ft of his bedroom.

The professional dancer revealed the details in amended documents to back up his case against Michael's estate, according to TMZ.

In the legal paperwork Wade also stated that the performer hung a "Do Not Disturb" sign on his bedroom door.

Wade wants money for the damages against him after apparently being sexually abused from 1990 for seven years as a youngster.

The 32-year-old choreographer says the incidents took place during sleepovers at the Neverland Ranch between the age of seven and 14.

Wade Robson has denied having a repressed memory, claiming he has "never forgotten one moment" of what Michael Jackson did to him.

Michael's family has slammed the allegations and point to the fact that Wade denied being abused when he testified at the singer's 2005 molestation trial.

The music legend was accused of child sex abuse in 1993 but the case was settled out of court.

Wade claims Michael was in touch with him throughout the period and would phone him daily to role play.

The star allegedly warned him that if people found out what had gone on between them "both of us would go to jail for the rest of our lives".

It has also been suggested that this is a way for the choreographer to make money, as he lost much of his wealth after his nervous breakdown.

The iconic singer died in 2009 of acute Propofol intoxication, with his personal physician Dr. Conrad Murray currently imprisoned for his involuntary manslaughter. When he died the star was preparing for a series of comeback shows, although his family are currently suing promoter AEG Live claiming he was not well enough to perform.