The Dramm AutoValve is a 9 volt battery operated controller that controls one valve. The AutoValve is available in a 3/4 or 1 valve body. The irrigation AutoValve can operated up to three times per day or on selected days. The misting AutoValve has all of the functions of the irrigation version, but offers a misting program as well. The AutoValves are perfect for temporary situations and for areas where no power is available.