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Front view of ControlScape CS-ART astronomical relay timer showing black enclosure, front label, and input/output connection points clearly visible.

ControlScape CS-ART Astronomical Relay Timer — 15 Amp

Brand: ControlScape
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$152.60
$114.45
SKU CS-ART
In Stock (11)

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The ControlScape CS-ART is a compact astronomical relay timer designed for landscape lighting and other AC-powered fixtures. It automatically calculates local sunrise and sunset, supports dusk/dawn offsets and realtime scheduling, and withstands harsh outdoor environments.

  • Controls up to 15 Amps of AC load for lighting, pumps, and accessories.
  • Compact footprint (3 x 2 x 1.25 inches) fits pass-through transformer plugs.
  • Sealed 15 Amp relay to prevent condensation-related failures.
  • Two independent timer sets for separate on/off schedules or scenes.
  • Program by dusk/dawn with offsets or by realtime clock for flexibility.
  • Automatic daily sunrise and sunset calculation with Daylight Saving adjustments.
  • Operates between -22°F and 158°F for reliable outdoor performance.
  • Intelligent inrush current control reduces false trips from inductive loads.
  • Built-in surge suppression (4.5 kA, 34 Joules) for transient protection.
  • Lithium battery backup with a 10-year life preserves settings during power loss.
  • Durable black enclosure with a one-year manufacturer warranty.

Easy to install and program, the CS-ART provides dependable, automated control for landscape lighting professionals and DIY installers. Ideal as an upgrade to existing transformers or as a simple standalone timer—comes backed by ControlScape's documented specifications and one-year warranty.

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Frequently Asked Questions

What maximum load can the CS-ART control?
The CS-ART controls up to 15 Amps of AC load, suitable for most landscape lighting circuits and small pumps.
How is the timer programmed for dusk and dawn?
Program using dusk/dawn modes with adjustable offsets or set realtime scheduling tied to local sunrise/sunset times.
Will the CS-ART keep settings during a power outage?
Yes. A lithium battery backup with an expected 10-year life preserves time and programming during power interruptions.
What protection features are included with the CS-ART?
Includes a sealed relay, intelligent inrush current control, and surge suppression rated 4.5 kA / 34 Joules for transient protection.