Sylvania SA140 15 Amp Zip Set Digital Lamp and Appliance Timer 15 Amp zip-set digital lamp and appliance timer automatically turns on lights at sunset; auto-adjusts for seasonal time changes Zip-set system allows timer to be programmed simply by entering ZIP code Provides battery back-up to maintain settings during power failure Includes random settings for added security and 7-5-2 setting for full weeks, weekdays, or weekends 1 Year warranty