Robert Darren Fry, 25, pleaded guilty in Horsham Magistrate's Court in October to two counts of having used a carriage service for indecent communication with a child under 16.

Magistrate Brian Clifford sentenced Fry on Wednesday.

Mr Clifford said Fry's behaviour was 'disgusting' and convicted and sentenced him to a 12-month community corrections order.

Fry must complete 120 hours of unpaid community work.

The maximum penalty for the Commonwealth offence is seven years' jail.

Mr Clifford rejected the prosecution's application to register Fry as a sex offender and said Fry's offending was a one-off incident across a 10-day period.

Police prosecutor Senior Constable Belinda Ryan told the court that Fry's victim was a girl, 13.

Fry communicated with the girl on Facebook, raised the topic of sex and eventually offered the girl $400 to 'flash' him.

Fry told police he thought the girl was 16.

Victorian Aboriginal Legal Service solicitor Karen Chibert said the offending was serious but did not involve face-to-face contact.

She said Fry had resigned from a job where he taught children.

Ms Chibert said Fry now worked for Goolum Goolum Aboriginal Co-operative and there was no suggestion that he would re-offend.

She said Fry's family supported him in court.