Hozelock AC1 Aqua Control 1 Water Timer - 2705. The Aqua Control (AC) Timer is one of the many incredible irrigation products developed by watering specialists Hozelock. It features a selection of easy-to-use watering functions, which allow you to get water to where it needs to be in the garden, rather than wasting it unnecessarily. Requires 2x 'C' Size batteries (not included)