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Datenlogger von Lufft

OPUS20 THI | Data-collector for temperature/humidity


For climate monitoring in buildings and the control of all climate-sensitive production processes: in electronic data-processing centres, control cabinets, wind turbines, storage rooms and museums.

Supplementary description:

The Opus20 runs on batteries or powered via USB. Alternatively, you have the possibility to power the device via POE (Power over Ethernet).

Special features:

  • The only LAN datalogger with built-in sensors and the highest precision!
  • Firmware online updatable

Download - product data sheet


Paperless workflows - Diehl Aerospace, Ueberlingen, Germany

At Diehl Aerospace GmbH in Ueberlingen a paperless workflow was made possible by means of the Lufft I-Box. They were looking for a way to cover

Data access from everywhere - Kistler Automotive, Schoenaich, Germany

In the DAkkS calibration laboratory at Kistler Automotive GmbH, the Lufft I-Box is in use for the data decentralization. The application consists of

Climate monitoring - Grupo Antolin Bamberg GmbH & Co. KG, Bamberg, Germany

Bernd Spindler, head of the electronics production at Grupo Antolin Bamberg GmbH & Co. KG confirms: "...

reference list pharma industry

Below you can find a small excerpt from customers we successfully cooperate with our data loggers ...

Latest news

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Data management made easy: the new SmartGraph3 version

With the SmartGraph3 software from Informatik-Werkstatt you can control your indoor climate measurement devices such as the

Top 5 FAQs of the month

Also this month, we collected 5 important questions and answers about our products: Topic 1: OPUS20 datastore ...

Lufft internal – employees introduce themselves: Johannes in action

With a company affiliation of 30 years, Johannes Hoffmann is rating amongst the highly experienced Lufft employees. He can look

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The free SmartGraph3 software makes it possible for industrial customers to evaluate measurement data easily. The version 3.0.0.

The Lufft I-Box and its new Apps

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Lufft’s monitoring software at a glance: SmartGraph3 and MCPS7

Demanding and complex measurement tasks can only be tackled successfully with high-precision devices. Aside from measurement,

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Technical data

Measuring interval10/30s, 1/10/12/15/30min, 1/3/6/12/24h
ConstructionPlastic housing
Operating time with battery> 1 Year
Data storage16 MB, 3,200,000 measured values
LC-DisplayHeight 90x64mm
WeightApprox. 250g
Included in deliveryPC-Windows Software SmartGraph 3
for graphical and numerical representation
of measured values / instruction manual / data cable / battery / DIN rail bracket
InterfaceUSB, LAN
Storage interval1/10/12/15/30min, 1/3/6/12/24h
Power supply4 x LR6 AA Mignon, USB
Operating temperature-20...50°C
Operating rel. humidity0...100% RH, < 20g/m³ (non-condensing)
Max. height10,000m above sea level


Measuring range-20 ... 50 °C
Accuracy±0.3°C (0...40°C), otherwise ± 0.5°C

Relative humidity

Measuring range0 ... 100 % RH
Unit% RH
Accuracy±2% RH


Industry_e.pdfBrochure Industrial Measuring Devices (EN)(6989KB)
8120_e.pdfManual OPUS20 dataloggers (ENG)(1621KB)
OPUS20_Functions_e.pdfOPUS20 Functions (ENG)(163KB)
Catalogue_2012_en.pdfLUFFT "A Passion for Precision" (EN)(13541KB)
SmartGraph3_V3_3_3.zipSoftware Smartgraph3 for all OPUS20 dataloggers and handheld devices(77120KB)
Firmware_OPUS20_V35.zipFirmware for manual updates OPUS20 (V. 3.5)(103KB)
Download - product data sheetDownload - product data sheet(350KB)


Product  Product comparison
Lufft I-BOX - Gateway for Industrial Measurement Lufft I-BOX - Gateway for Industrial Measurement8200.00
MCPS7 Software: Channel extension for up to 40 measuring channels MCPS7 Software: Channel extension for up to 40 measuring channels8040.7020
MCPS7 Software: Netview Client for 2 logins MCPS7 Software: Netview Client for 2 logins8040.7080
MCPS7 Software for OPUS20 incl. driver unit MCPS7 Software for OPUS20 incl. driver unit8040.MCPS
Wall mounting, anti-theft Wall mounting, anti-theft8120.WDS
Plug-in Power supply OPUS20 Plug-in Power supply OPUS208120.NT
Standard AA battery Standard AA battery8120.SV1