rosenthal design 

Radon FRn

The radon sensor measures the radon concentration in residential buildings and calculates an average value over up to one year in its internal memory. This level of radon concentration is displayed by means of LED flashing codes. Additionally, the radon sensor measures the relative humidity and the room temperature.

Radon sensor incl. mains adapter
Article no.130 004 00 | Price bracket  A | Price on request
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  • Radon concentration measurement
  • Annual average value calculation
  • Temperature and humidity measurement
  • Data transfer via KM2 Communication module or DL2
  • Evaluation and visualisation via
  • Display of radon concentration by means of LED flashing codes
Power supply:
Mains adapter: 100 – 240 V~, 1A / 12 V ⎓, 1 A (Level 6)
Radon sensor: 12 V ⎓, 40 mA / 75 mA in combination with a KM2, DL2 or DL3
Electrical energy source: ES1
Power source: PS1
Thermal energy source: TS1
Mechanical energy source: MS1
Data interface: VBus® for the connection to a KM2 or DL2/DL3, 1 digital output for the connection to a controller (in preparation)
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, also suitable for mounting into patch panels
Indication/Display: LED
Ingress protection: IP 20 / DIN EN 60529
Protection class: III
Ambient temperature: 0 ... 40 °C
Dimensions: Ø 139 mm, depth 45 mm
Overvoltage category: I
Maximum altitude: 2000 m above MSL
Measuring range:
Temperature: 0 ... 40 °C
Humidity: 0 ... 99 % RH


KM2 Communication module

KM2 Communication module

Communication module incl. network cable and mains adapter, VBus® cable pre-connected

DL2 Datalogger

DL2 Datalogger

Datalogger incl. RESOL Service CD, SD card and LAN cable, mains adapter and VBus® cable pre-connected




  Product portfolio (PDF)