Reliable Data Logging

Querx TH gathers temperature and humidity values, calculates the dew-point and makes all the data available via LAN.
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 51 days 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 TH 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 TH sends emails, SNMP traps and Syslog messages to notify you when
- customizable threshold values for temperature, humidity and dew-point are transgressed
- the temperature or humidity values rise or fall too quickly
- the values return to their normal state.

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 TH 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 / Bonjour, allowing for automatic detection and DHCP network configuration.

Quality Sensors

Querx TH features integrated sensors for temperature and humidity.

Accredited Calibration upon Request

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

Easy Installation

The case's small footprint makes it possible to install the sensor in confined spaces. It can be fastened easily by using the slits on the casing.

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 TH is very energy 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 TH


Temperature Sensor
Measurement range-40 to 185 °F
(-40 to 85 °C)
±0.7 °F at 14 to 185 °F
±1.8 °F at -40 to 14 °F
(±0.4 °C at -10 to 85 °C)
(±1.0 °C at -40 to 10 °C)
Resolution0.1 °F
(0.1 °C)
Long term stability
Typ. 0.018 °F
(0.01 °C)
per year
Humidity Sensor
Measurement range
0 to 95 % RH
Accuracy ±3 % RH at 20 to 80 % RH and 86 °F (30 °C)
Typ. ±1 % RH hysteresis
Resolution1 % RH
Long term stabilityTyp. 0.25 % per year
Sensor typeCMOS IC with polymide film
Hardware and Interfaces
CalibrationDAkkS certificate optionally available
Ethernet10/100 Mbit RJ45, HP Auto-MDIX, static or dynamic IP (DHCP client)
SystemNut/OS 5
Firmware updatesVia web interface, recovery feature
Sampling rate1 second
Logging intervalCustomizable
Memory capacity73.728 entries, ≙ 51 days (1 entry / min) to 8.4 years (1 entry / h)
M2M interfacesHTTP (XML, CSV, JSON), Syslog, Modbus/TCP, SNMP
Web interfaceInteractive diagram, live update, HTML5, CSS3, XML and CSV export
SecurityStartTLS / TLS, password protection, user management (3 users / 3 groups)
EmailUp to 4 recipients and 2 SMTP servers
SNMPSNMPv1 agent and traps
Status LED3 colors: red, green, yellow
Time / DateReal-time clock with battery backup and SNTP update
Supply voltage5 to 5.5 V DC via micro-USB
Power consumptionTyp. 120 mA, 0.6 W
Max. 200 mA, 1 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 dimensions2.2 x 1.6 x 0.8 in
(56 x 40 x 20 mm)
Sensor cable13.4 in
(340 mm)
Weight0.07 lb
(35 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
Flammability ratingUL94V-0
Protection classIP20
RoHS standardEU Directive 2011/65/EU
ConformityCE conform

Support + Downloads


Related Links

Latest Firmware



see Changelog






English, German



Version 1.1 of Querx TH and Querx WLAN TH now ships with a newly developed sensor cap that features two significant improvements.

More information


Querx TH

Querx TH with integrated sensors for temperature, humidity

Order number: EGN600214

140.00 EUR excl. VAT

162.40 EUR incl. 16% VAT

to the egnite Shop

Querx TH Set

Querx TH with integrated sensors for temperature, humidity
Ethernet cable
Micro-USB cable
Micro-USB power adapter with plugs for EU, UK, US, AU
Order number: EGN600114

155.00 EUR excl. VAT

179.80 EUR incl. 16% VAT

to the egnite Shop