MDT KNX 55 x 55 mm Temperature/Humidity Sensor, Pure White, Glossy, Flush Mount

MDT Room Temperature/Humidity Sensor 55 – Precise Climate Control for Indoor Spaces

The MDT 55mm room temperature/humidity sensor (SCN-TFS55.01) ensures a perfectly balanced indoor climate by precisely measuring temperature and humidity. Thanks to integrated dew point calculation, the device enables intelligent control of ventilation, heating, and air conditioning – ideal for energy-efficient use in residential, office, and commercial spaces. With its compact design, the sensor fits into all standard 55mm switch ranges and can be seamlessly integrated into KNX systems .

Key features

• Precise temperature measurement: Measuring range from -10°C to +50°C – optimal control of the room climate in real time.
• Humidity sensor with dew point calculation: Measures 0–95% relative humidity, detects the risk of condensation and protects against moisture damage.
• Individual limit control: Adjustable min./max. limits with memory function for long-term monitoring and automated control.
• Seamless integration: Compatible with all common 55mm switch ranges from GIRA, BERKER, JUNG and MERTEN.
• Direct KNX connection: No separate power supply required – power is supplied via the KNX bus.

Technical details

• Measuring ranges:
  • Temperature: -10°C to +50°C
  • Humidity: 0–95% (short-term), up to 80% permanently
• Power supply: KNX bus, typical consumption < 0.3 W
• Protection rating: IP20 – ideal for dry indoor areas
• Dimensions: 55 x 55 mm, installation depth only 12 mm
• Recommended mounting height: 1.6 m
• Ambient temperature: 0°C to +45°C

Applications

• Precise climate control in residential and office buildings
• Automatic ventilation and heating control via KNX systems
• Monitoring temperature and humidity in sensitive environments
• Perfect for smart homes and commercial building automation

Easy installation and operation

The sensor is mounted directly in junction boxes, allowing for discreet integration into existing switch ranges. Thanks to the integrated bus coupler , no additional power supply is required. Parameterization is conveniently performed via ETS5 ; the corresponding database is available for download on the official MDT website.

compatibility

• GIRA: Standard 55, Esprit, Event
• BERKER: S1, B3, B7
• JUNG: A500, AS500
• MERTEN: M-Smart, M-Plan

Product information

Manufacturer part number: SCN-TFS55.01
Article number: SMH0295

Shipping costs: free shipping within the EU for orders over €149; for orders under €149, we charge €5.90 shipping costs.

Switzerland: flat rate €25.00

Returns: You can cancel your purchase within 14 days of receipt and then return the products to us. Please note that for sustainability reasons and a fair pricing philosophy, we only cover return shipping costs in the case of a defect or warranty claim.

MDT technologies GmbH
Paper mill 1
DE-51766 Engelskirchen
knx@mdt.de