The AquaPro® digital timer is designed to be used as an upgrade or replacement. It can be used to control any 6V- or 12V-operated Stren feeder where the feeder battery powers this controller. It can be programmed for up to 6 daily feed times, each feed time adjustable from 1 to 90 seconds. Easy-to-read LCD display has auto shut-off and 100% solid state electronics. Weatherproof. One-year warranty.