AUGUSTA — A Waterville man was convicted Friday of sexual offenses involving four different children over a 12-month period.

Daniel B. Doucette, 44, pleaded no contest in Kennebec County Superior Court to three charges of unlawful sexual contact with children under 12 and one charge of unlawful sexual touching involving a child under age 14.

All the offenses occurred between March 15, 2010, and March 15, 2011, in Waterville.

Doucette was automatically found guilty, and he was sentenced to 22 months in prison, followed by a 10-year suspended sentence and four years’ probation.

Conditions of probation ban him from contact with children under age 18 except his own.

He also was required to register as a lifetime registrant under the state’s Sex Offender Registration and Notification Act.

In exchange for the plea, three other charges of unlawful sexual touching and two counts of assault involving the same victims were dismissed.