The American Hunter Universal Digital Timer wires into your existing feeder to give you easier control of your feed times.FeaturesDigital clock timer controls when and for how long feed is dispensed2 QSET and up to 16 custom settings for easy/quick set upAdjustable feed rate 1-30 secondsFeeds 1 to 16 times per dayCan feed different days of the weekAutomatically detects input voltage as 6V or 12V