Why Choose the Finder 11.41.8.230.0000 Light-Dependent Relay?
The Finder 11.41.8.230.0000 is a precise and energy-efficient modular light-dependent relay designed to switch lighting according to the measured ambient light level. Part of the Finder 11 Series, this twilight switch incorporates Finder’s Zero Hysteresis technology for accurate lighting control without unnecessary operating time.
Unlike conventional twilight switches that use different switch-on and switch-off thresholds, the Zero Hysteresis design switches the lighting at the same selected light level. This prevents lamps from remaining switched on longer than necessary as daylight increases, helping reduce electricity consumption across commercial, industrial and public lighting installations.
Operating from a 230 V AC supply, the Finder 11.41.8.230.0000 provides a single changeover contact rated at 16 A. Two selectable sensitivity ranges, covering 1–80 lx and 30–1,000 lx, support applications ranging from night-time exterior lighting to installations requiring operation at higher ambient light levels.
Key Advantages
- Automatic lighting control according to ambient light levels.
- Finder Zero Hysteresis technology helps eliminate unnecessary lighting time.
- Two adjustable sensitivity ranges covering 1–1,000 lx.
- Single changeover contact rated at 16 A.
- Timed operation prevents nuisance switching caused by temporary light changes.
- DIN rail-mounted format for straightforward control-panel installation.
Key Features
- Finder 11 Series modular light-dependent relay.
- 230 V AC supply at 50 / 60 Hz.
- 1 changeover contact rated at 16 A and 250 V AC.
- Standard sensitivity range of 1–80 lx.
- High sensitivity range of 30–1,000 lx.
- 15 s switch-on delay.
- 30 s switch-off delay.
- Connection for a separately positioned external photosensor.
- External photosensor cable length can be extended up to 50 m.
- 35 mm DIN rail mounting for modular electrical enclosures.
Energy-Efficient Lighting with Zero Hysteresis
Light-dependent relays use an external photosensor to monitor ambient illumination and operate connected lighting when the selected threshold is reached. This provides automatic lighting control based on actual environmental conditions instead of relying solely on fixed schedules or manual switching.
Finder’s Zero Hysteresis technology allows the 11.41 to switch lighting on and off at the same ambient light threshold. Combined with its separate switch-on and switch-off delays, this provides accurate control while preventing vehicle headlights, lightning, temporary shadows and other brief light changes from causing unwanted switching.
Typical Applications
- Street, pathway and public-area lighting.
- Commercial exterior and security lighting.
- Industrial yards, loading bays and storage areas.
- Car parks and perimeter lighting systems.
- Shop-window and illuminated-sign control.
- Garden and architectural lighting.
- Energy-efficient building automation systems.
