TSR4/TSR3D WLAN wireless and USB Radon Probe

850,00 Inc. VAT: 1.037,00

  • New generation of portable radon probe
  • Standalone measurement with saving data into own internal memory
  • Direct USB connection of probe and a PC
  • Wireless data transmission via wireless Central Unit
  • Internal high-capacity rechargeable accumulator;
    USB charging or power adapter 230V/50Hz
  • Probe measurement possible to turn off by switch while real time in probe keeps on
  • Diagnostic LED diodes ´charging´ and ´status´
  • Display and button for quick result viewing (TSR3D)


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TSR4 is designed for continuous measuring of radon concentrations in buildings.
Portable probe basis is a measuring chamber with a semiconductor photodetector. Radon enters the chamber by diffusion through the input filter on the bottom of probe. The probe measures in autonomous and time continuous way. It processes results every 4-minute intervals and from this counts short-term moving average of radon concentration ( 1 hour moving average – average of 15 4-minute process intervals). It also counts long-term moving average of radon concentration ( 24 hours moving average). The probe saves time records of these radon concentration values including values of humidity and temperature within its internal memory (typically at an interval of 1 hour). Next saved value is time record of measuring energy spectrum (typically at an interval of 12 hours). The probe is random for location in measured place, but generally it is put on the bottom of the probe. Bottom of the probe cannot be covered. The probe can be switched on/off by switch. LEDs „STAT“ a „CHRG“ indicate current status of probe.
The resulting values can be downloaded continuously during measurement or at once at the end of measurement. Data from the radon probe can be downloaded to a PC directly via USB interface or wirelessly via antenna and Central Unit. Central Unit is not included with package of TSR3 and it is sold and delivered extra.


Average measurement sensitivity0,25 count/hour/Bq.m-3
(method RaA+RaC; 15°C ÷ 30°C; rel. hum. 20% ÷ 40%)
Measuring rangeMDA – 10E6 Bq/m3;
MDA = 100 Bq/m3 per 1 hour or 20 Bq/m3 per 24 hours
Measurement uncertainty< 13% at 300 Bq/m3 per 1 hour;
< 3% at 300 Bq/m3 per 24 hour
Measuring chamber capacity0,176 dm3
Response rate< 30 minutes (RaA); < 3 hours (RaA + RaC)
Measuring algorithmquicker, less sensitive (calculated from RaA)
slower, more sensitive (calculated from RaA + RaC)
Measuring relative humidity range10 – 90 %
Measuring temperature range-20 to + 60 °C
Radio interface868MHz
Max number of measuring network elements16
Probe to terminal unit distance (RF range)depends on number of walls and building material, up to 600 m in open space
Possibility of using repeater for RF range extendingyes
Results reading interval (from probe)240-65535 sec (4 min – 18.2 hours)
Records saving interval (probe)1- 255 minutes, default 1 hour
Results memory capacity in probe150 days
Poweringinternal rechargeble accumulator; charging via USB
Accu life after full charging>1 year
Radon concentration results displayshort-term (1 hour running average)
long-term (24 hours running average)
DimensionØ 80 x 175 mm


Overview TERA Radon program (pdf format in english)
TSR4 -Product Specifications and Operation Manual (pdf format in english)
TSR3D – Product Specifications and Operation Manual (pdf format in english)


This product is covered by a warranty of 24 months from the purchase date.
– In case of a warranty claim, please contact our Service Department.
– The warranty covers any defects in materials or workmanship and excludes any damage resulting from or caused by transport or handling or by any misuse.
– The warranty ceases if the product has been used improperly or its seal is broken.
– In the case of a warranty claim, the warranty period is prolonged by the number of days the product was undergoing warranty repairs.
– After the end of its life, the product must be handled as e-waste.


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Il team NITON srl nasce nel 2017 dalla volontà di creare un gruppo di persone che si sono scelte, unite dalla condivisione degli stessi valori professionali ed umani: dedizione al lavoro, onestà intellettuale, etica e rispetto dell’ambiente a 360°.
Professionisti del Radon accreditati dall’NRPP: Niton è la prima ed unica società in Italia che si avvale, per i rilievi Radon, di professionisti certificati dal National Radon Proficiency Program (NRPP) degli Stati Uniti. Perché quando affermiamo di essere specialisti del Radon, abbiamo le carte per dimostrarlo!FIDOtrack: FIDOtrack è il sistema di misura della concentrazione di Radon per il medio e lungo periodo. Semplice da usare, ricevi i rivelatori, li posizioni, al termine del periodo di esposizione ce li rimandi e ricevi via e-mail un certificato ufficiale con l’esito delle misure. Niton è risultato uno dei migliori laboratori europei nella prova di Interconfronto 2019 organizzato dall’Istituto Tedesco Bfs, con i propri rivelatori FIDOtrack.
Aspiratori di Radon: NITON srl è distributore ufficiale dei prodotti RadonAway ed è distributore esclusivo degli aspiratori RadonAway in Italia.
Cerchi un professionista del Radon per un’indagine approfondita del tuo immobile? Contattaci al numero 0222197130 o tramite e-mail all’indirizzo [email protected]