A manhunt is underway for two masked men who broke into a home with several children inside.

The duo entered the property on Sarah Crs in Baulkham Hills, northwest Sydney, about 2.20am on Monday.

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Armed with a metal pole and an electronic stun device, the pair stole cash from the family before running away from the scene.

Police arrived shortly after and found no one had been injured.

An investigation has been launched as police attempt to locate the two men.

Anyone with information has been urged to contact The Hills Police or Crime Stoppers.