Grozone Garden Controls Light Timer

The Grozone Garden Controls Light Timer controls either lighting systems with a trigger cord, or standard and electronic ballasts ( two 600W or one 1000W at 120V). Day cycles (ON cycles) last 12 or 18 hours, as selected by the user. An internal rechargeable battery maintains the cycles in the event of a power outage. Real Time Clock Accuracy: time will drift less than 15 minutes in a year. One year warranty.