MDT twilight and temperature sensor – Precise outdoor monitoring for KNX systems
The MDT twilight and temperature sensor (SCN-DTSEN1.01) is a high-quality surface-mounted sensor for the precise measurement of outdoor brightness and temperature. Its robust design and precise measuring technology make it ideal for outdoor use. The sensor enables intelligent control of lighting, blinds, and heating systems within a KNX building automation system – for greater comfort, security, and energy efficiency.
Key features
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Precise light sensor
- Detection range from 10 to 100,000 lux .
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Twilight range : 10 to 1,000 lux – ideal for automatic day/night switching.
- Individually adjustable thresholds for day/night objects and brightness.
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Precise temperature sensor
- Measuring range from -30 to +50 °C for year-round use.
- Two freely configurable threshold values – e.g. for frost or overheating warnings.
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Advanced control functions
- On/off delay for threshold values to reduce false signals.
- Direct transmission of measured values to the KNX bus.
- Supports day/night objects for intelligent scene control.
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Weatherproof construction
- Robust housing with IP44 protection rating for outdoor use.
- UV and weather resistant materials for long service life.
Technical details
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Light sensor:
- Dynamic range: 10 – 100,000 lux.
- Brightness measuring range: 1,000 – 100,000 lux.
- Measuring range twilight: 10 – 1,000 lux.
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Temperature sensor: Measuring range -30 to +50 °C.
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Power supply: KNX bus, typical power consumption < 0.3 W.
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Dimensions: 50 × 77 × 21 mm (W × H × D).
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Operating temperature: -30 to +70 °C.
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Protection class: IP44 – suitable for outdoor installation.
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KNX interface: TP-256, compatible with ETS5 and ETS6.
Applications
- Automatic light control based on daylight values.
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Temperature monitoring for frost warnings, ventilation or air conditioning control.
- Integration into energy-efficient building controls and smart home scenarios.
- Control of blinds, shutters and outdoor lighting according to weather and light conditions.
Easy installation and integration
- Surface mounting on exterior walls or facades.
- Direct connection to the KNX bus without additional power supply.
- Parameterization and adjustment of threshold values via ETS5 or ETS6.
Product information
Manufacturer part number: SCN-DTSEN1.01
Article number: SMH0273
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