LAN and WiFi Radon Probe TSRE1

Probe for Radon Concentration Measurement in buildings with Ethernet data transmission in LAN and WLAN networks.


  • Continuous monitor of radon volume activity – electronic measuring radon concentration 20 – 100 000 Bq/m3
  • Measurement uncertainty – < 13% at 300 Bq/m3 per 1 hour; < 3% at 300 Bq/m3 per 24 hour
  • Accompanying measurements – temperature (-20 ° C to + 60 ° C), humidity (10% – 90%), energy spectrum
  • Current radon concentrations – short-term (hourly average) and long-term (daily average)
  • Long-term records – results stored in the internal memory for period longer than 2 years; data export CSV, HTML, TAB


  • ETHERNET interface – remote control via LAN TCP/IP network (10/100 Base-T) or via Wi-Fi
  • HTTP (WEB) protocol – view and manage via a Web browser; no extra app; independent on your OS
  • SNMP protocol – network management and traps when crossing min./max. concentration limits
  • MODBUS TCP protocol – access protocol for industrial networks
  • HTTP (GET, PUSH) – easy software implementation to other systems – standard access to data

User Friendly

  • Graphs – graphical representation of results, with the option of saving a spreadsheet for further use
  • Access accounts – only viewing “user”, administration “administrator”, expert “expert”
  • Dynamics of view – also optimized for viewing on smartphones
  • Backup of real time – for power outages
  • Language – Czech and English language pack
  • Power supply – AC 230V or using the PoE splitter (supplied extra)


  • Fixed installation – designed primarily for permanent installation and long-term monitoring of radon concentration
  • System integration – suitable for integration into smart buildings and industrial systems
  • Monitoring 24/7 – alarms when exceeding set limits radon concentration
Product Specification 
Average measurement sensitivity0,25 count/hour/Bq.m-3
(method RaA+RaC; 15°C ÷ 30°C; rel. hum. 20% ÷ 40%)
Measuring rangeMDA – 100 000 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)
Radon concentration results displayshort-term (1 hour moving average)
long-term (24 hours moving average)
Measuring algorithmquicker, less sensitive (calculated from RaA)
slower, more sensitive (calculated from RaA + RaC)
Measuring relative humidity range0 – 100%
Measuring temperature range-40 to +125 °C
Wired interfaceEthernet 10/100 Base-T (RJ45)
Wireless interfaceWiFi 802.11 b/g/n 2,4 GHz
Records saving interval1- 255 minutes, default 1 hour
Results memory capacity in probe> 2 year (hours records)
PoweringPower adapter 230VAC/5VDC or PoE splitter
Access protocolHTTP, WEB interface, IPv.4
Advances access protocolHTTP (GET, POST, PUSH), SNMPv.2, TCP/IP Modbus
Recommended internet browsersGoogle Chrome, Mozilla Firefox
LanguagesEnglish, Czech
AccountsUser, Administrator, Expert
DimensionØ 80 x 175 mm
Operating conditions
Temperature-10°C to +40°C
Recommended relative humidity *10% – 75%
Maximum working relative humidity0% – 99%
Absolute humidity5-20 g/m3
Detector life50-100 million pulses
Ø 1000 Bq/m3 ->12 years
Ø 10 000 Bq/m3 ->1 year

* Increased humidity reduces the life of a charged battery.
* There must be no condensation of water in the chamber – erroneous results


PoE splitter

PoE splitter for TSRE1 radon probe

Probe Holder

Probe holder


Other Tools


Computer program from SURO (NRPI) for visualization and analysis of data files exported from radon concentration measurement devices made by TESLA (RADIM 3X a TSRX) and made by SAPHYMO-BERTIN (ALPHAGUARD).