Replacement transformer for use with Fairy Light Trees and falling willow lighted branches, starbursts (including set-of-3 starbursts), curved palm trees, light balls and fairy light balls. Use the 5V transformer for fairy light balls. Use the 12V transformer for curved palm trees. Use the 24V transformer for light balls (not including fairy light balls), starbursts (including set-of-3 starbursts), climbing vine and falling willow lighted branches.