Day-night sensors that work hard so you don’t have to

When working on residential builds, commercial upgrades, or even rural installations, the goal is always the same: deliver a system that works reliably, efficiently, and without constant client callbacks. That’s where day-night sensors come into play. And in the Eurolux range, including the CO203 (25 A) and CO238 (10 A), stands out for its practical performance and durability.

CO203: High-capacity control where it counts (25 Amp)

The Eurolux CO203 is built for heavier-duty applications. With a 25 A load rating, it’s ideal when for running multiple lights off a single sensor or working with higher wattage fittings such as:

• Commercial floodlights for warehouses, perimeter walls or loading bays;
• Estate boundary lighting where long runs and higher loads are common;
• Rural or agricultural installations where you may want to trigger several high-wattage lights from a single control point; or
• Large-scale driveway or entrance illumination, especially where aesthetics and automation are both key.

Its higher amperage ensures flexibility – a contactor won’t be needed for most standard lighting circuits, cutting down on extra wiring and potential failure points.

CO238: Compact and efficient for everyday use (10 Amp)

Smaller jobs don’t need less reliability – just a sensor that’s right-sized. The CO238 handles 10 A, making it perfect for:

• Residential perimeter lighting (garden spikes, bollards, porch fittings)
• Holiday homes or Airbnb properties, where low-maintenance automation is a bonus
• Feature lighting for landscaping that needs automatic on/off functionality; and
• Garage or entrance lights where energy-saving and convenience are a priority.

The CO238 offers a neat, low-profile solution with dependable photocell response and a clean finish – ideal when aesthetics still matter but the load is lighter.

Practical perks across the board

Both units offer:

• Automatic dusk-to-dawn switching (no need to adjust timers with the seasons);
• Energy savings – lights are never left running in daylight;
• Improved security – automated lighting deters intruders and improves visibility; and
• Peace of mind for homeowners and facility managers, especially when properties are left vacant for holidays or off-seasons.

Installation is straightforward: three-wire setup (Live In, Neutral, Switched Live Out), compatible with standard AC lighting circuits.

Which sensor where? A quick guide

“Keep it smart. Keep it simple. Choose the Eurolux day-night sensor that works for your job,” Eurolux said. “For full specs and trade support, contact your preferred Eurolux distributor.”