Easy 24-hour on/off scheduling in 48 half-hour segments Permits separate ON or OFF scheduling for half-hour periods of the day Full manual ON/OFF control still retained Quiet electronic operation - no irritating ticking timer No tiny pins to lose Essential Info Looking for quiet, reliable, and accurate electronic timing for lighting and motor control? You've found it with the Leviton In-Wall LCD Timer, a programmable, electronic timer switch that permits 24-hour ON/OFF scheduling in 30-minute intervals. Yet you'll still have complete manual ON/OFF control via the buttons just below the easy-to-read LCD screen. The Leviton In-Wall LCD Timer is ideal for programming landscape lighting, making your house look occupied when you're not home, making sure the front porch light is on when you come home each night, whole-house exhaust fan scheduling, and more. Note that the Leviton LCD Timer does not work in a three-way switch configuration.