Astronomical Time Clock With Battery Backup

They come in standard 24 hour 7 day and 7 day astronomic versions. 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. 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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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.

Astronomical time clock with battery backup.

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. Et8215c intermatic electronic astronomic 7 day time switch dual circuit nema 1 buy online at aartech canada. 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. The time switch to be powered by 120 208 240 277 vac 50 60 hz power supply.

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 shall provide a minimum on or off time of 1 minute. Constant time display real time clock with 10 yrs battery back up dust proof membrance keypad up to three relay outputs rated 230v 10a built in almanac program easy installation user friendly convenient manual override switches. This series offers an easy way to upgrade from a basic mechanical time switch to an electronic time switch.

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