Twilight Switch TS-41-4
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Twilight Switch TS-41-4 – Smart Lighting and Sign Control 230V
The TS-41-4 twilight switch is a reliable device designed for automatic activation and deactivation of electrical loads (e.g. street lights, building illumination, advertising boards, LED signs) depending on ambient light intensity. It operates within a logarithmic range of 1–1000 lx, switching ON at dusk and OFF at dawn (or vice versa).
Applications of TS-41-4
Perfect for:
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street and outdoor lighting control,
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building and façade lighting,
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LED advertisements and signage,
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external 230V automation systems,
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industrial and commercial lighting setups.
Construction and Components
Set includes:
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TS-41 Controller – made of flame-retardant ABS (V0), DIN rail mount (35 mm, 1 module 18 mm),
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External Sensor (IP65) – non-flammable ABS housing with a 5 mm rubber grommet on the rear wall for cable entry.
The sensor can be mounted on a wall or vertical surface with two included screws.
The cable connecting the controller and sensor can reach up to 1000 m (2 × 0.5 mm²).
Key Features and Advantages
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Adjustment range: 1–1000 lx (logarithmic)
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1–10 lx – energy-saving mode,
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10–100 lx – standard mode,
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100–1000 lx – for bright-light control applications.
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Switching capacity: 16 A (4000 W) 250 V AC / 16 A (384 W) 24 V DC
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Inrush current resistance: up to 100 A
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Galvanically isolated NO/NC relay contacts – flexible wiring configuration
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Proportional hysteresis – prevents flickering under variable light
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Activation delay (~60 s) – avoids false triggers (e.g. headlights, lightning)
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LED Indicators:
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green – power presence,
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red (flashing) – light threshold exceeded,
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blue – relay state (1–2 / 2–3).
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Installation and Use
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Controller mounted on DIN rail 35 mm,
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External sensor mounted on a wall (two screws included),
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Recommended orientation: east or southeast, for earlier dawn deactivation and energy savings,
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Avoid direct exposure of the sensor to artificial light to prevent flickering or cycling.
Safety
The TS-41-4 twilight switch must be installed by a qualified electrician.
Ensure appropriate circuit protection and adherence to electrical safety regulations.
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