Timeguard zv700 7 day digital security light switch timeguard zv700b p the timeguard zv700b 7 day digital security light switch is a 24 hour 7 day digital light switch which will automatically turn filament fluorescent low energy and low voltage lights on and off at pre programmed times an optional dusk start feature turns lights on at dusk and off at a programmed time p p the zv700b combines the function of a manual light switch with automatic timed control of lighting on a weekly bas