TCR 4A Terminal (Central Unit)-TERA System for Regulating Radon Concentrations in Buildings

543,00 Inc. VAT: 662,46


The portable central unit controls the operation of the radon concentration measuring and control network. It collects data from individual elements (probes), it evantually operates actuating units. The terminal supports simultaneous data downloads from up to 16 elements. All values are saved in the terminal memory. The terminal can be connected with a computer via USB. By the TERAview application on PC is possible to configure wireless net and download measuring data. Resulting values can be downloaded continuously during measurement or at once at the end of measurement.


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Central Unit can be connected to TCREX – Extended Memory and IP Access Point for TCR Terminal which is designed for radical extension of TCR terminal results memory capacity and for possibility to connect TCR wireless terminal into LAN network or into internet for remote control
The central unit is provided with a two-line alphanumerical display and with a three-key keyboard for operating. Display shows the basic measuring values of a selected probe (short and long-term radon concentrations, temperature, humidity) and values of the central unit alone (temperature, pressure, humidity). Via the keypad is possible to select type of shown data.Both the central unit and the control program have separate operation manuals.
The central unit is connected with the control computer via USB interface. The USB port of the central unit is also used for charging the internal unit’s accumulator, either from the computer USB port or the USB power adapter. Another possibility of powering is 12VDC over connector in back. This possibility is design for static installation.
The terminal has internal actuating unit (memory alarm relay) by which it is possible to switch low power input load, for example small fan, if the set limit of radon concentration is exceeded.

tcr4 connector

LED diode ´STATUS´ indicates general status of the terminal and wireless network. LED diode ´CHRG´ indicates status of internal accumulator charging.


Measuring temperature range-20 to + 60 °C
Measuring barometric pressure range150 – 1150 hPa
Radio interface868MHz
PC interfaceUSB B
Max number of radio network elements16
Probe to terminal unit distance (RF range)depends on the number of walls and building material, up to 600 m in open space
The possibility of using the repeater for the RF range extendingyes
Measurement reading interval240-65535 sec (4 min – 18.2 hours)
Results memory capacity in terminal unit100 days (1 probe,1 hour records)
Terminal unit power supplyRechargeable battery (USB charged) or 12 VDC
Radon concentration results displayshort-term (1 hour average)
long-term (24 hours average)
Maximum relay switching power30W DC (1A/30V)


Overview TERA Radon program (pdf format in english)
TCR4A Terminal-Technical 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]