David Moody (60) – who also admitted two counts of sexual assault and sexual penetration without consent – appeared in the Royal Court on Friday.
Moody, who retired from the Ambulance Service after more than 20 years’ employment, was subsequently remanded in custody.
He will next appear in court on 16 June for an application for other charges against him to lie. His sentencing date was set for 21 August.
The length of time that he will spend on the Sex Offenders Register will be determined at his sentencing.
The Bailiff, Sir Timothy Le Cocq, was presiding.