Reliable Data Logging

Querx WLAN PT measures the temperature via external Pt100 / Pt1000 sensors and makes all the data available via LAN or WiFi.
The minimal, maximal and average values are stored on the device at one minute intervals, including a timestamp. The integrated storage can hold the data of at least 7.5 years and all data is safe even in the event of a power shortage.

Data Visualization

The web interface visualizes all gathered data in an interactive graph. Modern technology standards such as HTML5, CSS3 and SVG facilitate data access via the web browser on your computer, tablet or smartphone.

Data Export in Various File Formats

Querx WLAN PT can export data, making further processing and archiving simple. The CSV format is suited for spreadsheet software such as Excel. The XML format enables further automated processing in customized software solutions.

Suitable for Monitoring Systems

The data is provided via M2M systems. The sensor can be integrated into network management systems such as Zabbix or Icinga via SNMP. Modbus/TCP allows to use the device in the industrial sector via SCADA. All logged and current data can be accessed from Python, PHP and other programming languages via HTTP.

Cloud Interfaces

If required, all data can be sent to Internet-Of-Things clouds such as dweet.io, Palamoa or ThingSpeak. This feature makes it possible to access data around the globe and integrate all data into custom projects via the programming interfaces provided by the cloud services.

Diverse Alerts

Querx WLAN PT sends emails, SNMP traps and Syslog notifications and also features optical and acoustic alerts that are triggered when - the temperature rises above or falls below configurable limits - the temperature rises or fall exceptionally quickly - the value returns to its normal range

Encrypted Email Alerts

Up to four recipients can be informed of any occurring alerts via two mail servers. Notifications can therefore be sent even if one server should fail.
The alert emails are encrypted. Customizable text-variables let you create meaningful notifications.

Simple Operation via Web Interface

Configuring and operating Querx WLAN PT is intuitive. The user interface is self-explanatory and additionally features an in-depth online help section.

Quick Setup

Integrating the smart sensor into existing networks requires no complicated configuration. It supports mDNS or LLMNR, allowing for automatic detection and DHCP network configuration.

Extensive Selection of Sensors

Querx WLAN PT supports any 2-. 3- and 4- wire Pt100 or Pt1000 temperature sensors.
Temperatures in the range of -328 °F to +1382 °F (-200 °C to +750°C) can be measured, depending on the connected sensor. This makes the device suited to a wide field of applications.

Accredited Calibration upon Request

Calibration is a vital component of quality control. ISO or DAkkS certificates are available for all Querx devices. They can be purchased together with the device or at a later date.

Extended Temperature Range

The smart sensor works reliably, even in adverse conditions. Querx TH functions in temperatures between -40 °F and +185 °F (-40 °C and +85 °C).

Low Power Consumption

Querx WLAN PT is very efficient. The power consumption is less than 1 W. An unused USB port or an external wall plug power supply can be used to power the device.

Always up to Date

The Querx firmware is continually updated and adapted to current developments. New versions of the firmware are made available periodically. The web interface tells you what version Querx is currently running and lets you update the firmware.


Test the user interface and get an idea of the functions offered by the Querx sensors.

Specifications Querx WLAN PT


Hardware and Interfaces
Pt100 or Pt1000 connector2-, 3- and 4-wire
Measuring range-328 to 1382 °F
(-200 to 750 °C)
±0.9 °F
(±0.5 °C)
Resolution0.1 °F
(0.1 °C)
CalibrationISO or DAkkS certificate optionally available
Ethernet10/100 Mbit RJ45, HP Auto-MDIX, static or dynamic IP (DHCP client)
WiFi2.4 GHz IEEE 802.11 b/g/n
WiFi securityWEP, WPA, WPA2
SystemNut/OS 5
Firmware updatesVia web interface, recovery feature
Sampling rate1 second
Logging intervalCustomizable
Memory capacity4 million entries, ≙ 7.5 years (1 entry / min) to 350 years (1 entry / h)
M2M interfacesHTTP/S (XML, CSV, JSON), Syslog, Modbus/TCP, SNMP
Web interfaceInteractive diagram, live update, HTML5, CSS3, XML and CSV export
SecurityStartTLS / TLS, HTTPS, password protection,
user management (3 users / 3 groups)
EmailUp to 4 recipients and 2 SMTP servers
SNMPSNMPv1 agent and traps
SignallerRGB LED, beeper
Time / DateReal-time clock with battery backup and SNTP update
Power supply5 to 5.5 V DC via micro-USB
Power consumptionTyp. 200 mA, 1 W
Max. 300 mA, 1.5 W
Ambient Conditions
Operation-40 to 185 °F, max. 95 % RH
(-40 to 85 °C, max. 95 % rF)
Storage-40 to 185 °F, max. 95 % RH
(-40 to 85 °C, max. 95 % rF)
Casing materialABS plastic, black, RAL 9011
Casing dimensions2.6 x 2 x 0.8 in
(66 x 50 x 20 mm)
Sensor cable13.4 in
(340 mm)
Weight0.2 lb
(63 g)
Connectors RJ45 (Ethernet), micro-USB
InstallationWall mounting
Interference immunityEN 61326-1:2013 class A
EN 61000-4-2:2009
EN 61000-4-3:2011
EN 61000-4-4:2013
EN 61000-4-6:2009
EN 61000-4-8:2010
Emitted interferenceEN 61326-1:2013 class B
EN 55011:2011
ETSIEN 300 328, Ver. 1.8.1
EN 301.489 - 17
Flammability ratingUL94V-0
Protection classIP20
RoHS standardEU Directive 2011/65/EU
ConformityCE conform

Support + Downloads


Related Links

Latest Firmware



see Changelog






English, German



Querx WLAN PT100

Querx WLAN PT100
Simple Pt100 probe without sensor sleeve

Order number: EGN601415

250.00 EUR excl. VAT

290.00 EUR incl. 16% VAT

to the egnite Shop

Querx WLAN PT100 SET

Querx WLAN PT100 Set
Simple Pt100 probe without sensor sleeve
Ethernet cable
Micro-USB cable
Micro-USB power adapter with plugs for EU, UK, US, AU
Order number: EGN601315

265.00 EUR excl. VAT

307.40 EUR incl. 16% VAT

to the egnite Shop

Querx WLAN PT1000

Querx WLAN PT1000
Simple Pt1000 probe without sensor sleeve

Order number: EGN601715

250.00 EUR excl. VAT

290.00 EUR incl. 16% VAT

to the egnite Shop

Querx WLAN PT1000 SET

Querx WLAN PT1000 Set
Simple Pt1000 probe without sensor sleeve
Ethernet cable
Micro-USB cable
Micro-USB power adapter with plugs for EU, UK, US, AU
Order number: EGN601615

265.00 EUR excl. VAT

307.40 EUR incl. 16% VAT

to the egnite Shop