MANDALAY, Myanmar — A Dutch tourist who unplugged an amplifier that was broadcasting Buddhist chants, which he said disrupted his sleep, was sentenced to three months of hard labor in prison by a court here on Thursday.

The tourist, Klaas Haijtema, 30, was found guilty of causing a disturbance to an assembly engaged in religious worship. He had been staying at a hostel in Mandalay on Sept. 23 when a nearby Buddhist center began broadcasting the recitations of religious devotees.

“I was really tired that night and woke up to the noise,” Mr. Haijtema told the court during a hearing last week. “I was very angry and assumed that children were playing music. I told them to lower the volume of the loudspeakers before I unplugged the amplifier, and they didn’t understand me. That’s why I unplugged it.”

Mr. Haijtema wept after the prison sentence was announced. He was also fined the equivalent of $80 for violating the terms of his entry visa, which require visitors to obey Myanmar’s laws and customs. Myanmar is a predominantly Buddhist country, and Mandalay is a relatively conservative city.