In the world of energy-saving automation, astronomical time switches are a smart, hassle-free solution for controlling lighting and electrical systems based on natural light cycles. For wholesalers and electrical professionals looking to offer their clients better efficiency and automation, these devices are a must-have.

What Are Astronomical Time Switches?

Unlike basic timers that work on fixed schedules, astronomical time switches automatically adjust switching times based on sunrise and sunset at a specific geographical location. This means lights come on when it actually gets dark — not just at 6:00 PM year-round — eliminating unnecessary energy usage and manual reprogramming.

How Do They Work?

Astronomical timers use a built-in microprocessor to calculate the exact dawn and dusk times for each day of the year. They require a one-time setup of either:

• Latitude and longitude, or
• Your local city or area code

From there, the device calculates daily switching times and even accounts for daylight saving time automatically.

Why Use an Astronomical Timer?

Whether you’re fitting out a commercial building or managing municipal lighting, the benefits are significant:

• Energy savings: Lights only operate when needed — no more wasting electricity during daylight hours.
• Maintenance-free operation: Once programmed, the device adjusts automatically throughout the year.
• Precision control: Built-in offset options allow fine-tuning (e.g. turn lights on 15 mins after sunset).
• Reliability: No reliance on external light sensors that can fail or get blocked.
• Secure programming: Many models offer PIN-lock access or Bluetooth configuration for remote setup.

Applications

• Public or street lighting
• Car parks and exterior building lights
• Shop signage and window displays
• Industrial and commercial premises
• Outdoor security and landscape lighting
• Fountains and decorative installations

Top Picks from ORBIS

Astro Nova City
A high-capacity DIN rail time switch with two independent channels and up to 40 programmable events. Choose between fixed or astronomical timing. Ideal for larger systems needing flexible schedules and municipal applications.

Astro Nova City Bluetooth
All the features of the Astro Nova City, with added Bluetooth connectivity. Configure quickly via smartphone or tablet using the free Orbis app — perfect for installers managing multiple units or remote access setups.

MICRO ASTRO
New to the range — a compact, 1 DIN wide astronomical switch designed for smaller installations. Offers backlit LCD, latitude programming, and replaceable front battery with a 4-year reserve. Perfect for lighting communal areas, signs, and tight electrical enclosures.

Technical Features to Look For

• Switching capacity: Up to 16 A / 250 V
• DIN-rail compatibility: Easy integration into panels
• Battery backup: Maintains settings during power cuts
• Manual override: Both temporary and permanent options
• Backlit display: Clear visibility even in low light
• PIN or physical security: Protect against unauthorised changes

Final Thoughts

Astronomical timers offer the perfect blend of intelligence, reliability, and cost savings — with no moving parts or external sensors to maintain. Whether you're a wholesaler looking to stock dependable time switches, or a contractor who wants to deliver automated lighting control, the Orbis range delivers performance you can trust.

Explore our full range of Time Switches »