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Previously i was using the old clock timer mechanism in series with a photocell control because we didn t need our parking lot lights for illumination past midnight.
Astronomical time clock with battery backup. They come in standard 24 hour 7 day and 7 day astronomic versions. The time switch shall provide a minimum on or off time of 1 minute. Now we no longer need the photocell because this astronomical timing device turns on the lights everyday at sunset it knows when the sun sets in its zip code location and turns off the lights precisely at 12 am. The time switch to be powered by 120 208 240 277 vac 50 60 hz power supply.
The time switch shall include selectable astronomic dusk dawn settings for each day and circuit to allow load switching at sunset and or sunrise without a photo control device. 24 hour 7 day 365 day astronomic and cycle timers for precision control of large and small scale lighting pump fan farming applications and more. These timers will allow for up to the minute programming battery backup for power loss up to 28 events total and automatic daylight saving time corrections without the need of user interaction. These timers will allow for up to the minute programming battery backup for power loss up to 28 events total and automatic daylight saving time corrections without the need of user interaction.
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