Querx THP

Available from December 2016

Web Thermometer, Hygrometer, Barometer and Data Logger

Querx THP measures temperature, humidity and pressure precisely and calculates the dew point.

The smart sensor features an integrated data logger, alert functions and several interfaces that allow for manual or automated data access.

The device is controlled and configured via a graphical web interface and can operate autonomously.

Querx THP supports various cloud services. This makes all data accessible globally at any time, via web, apps and APIs.

egnite - Querx THP - Web Thermometer, Hygrometer, Barometer und Datenlogger
egnite - Querx Smart Sensor
Interactive Data Visualization

The web interface displays all tracked measurements in an interactive graph. The latest standards such as HTML5, CSS3 and SVG facilitate access to the interface via your PC, tablet or smartphone.

System Monitoring

Querx THP provides access to data via M2M-interfaces. SNMP support lets you integrate the sensor into network management systems such as Zabbix or Icinga. The device can also be applied in the industrial sector via SCADA systems, due to the integrated Modbus/TCP interface.

Data Export in Several Formats

Recorded measurements can be exported for further external processing and archiving. The CSV format is compatible with spreadsheet applications such as Excel. The XML format makes it possible to process data automatically in customized software solutions.

Reliable Data Tracking

Querx THP tracks temperature-, humidity- and pressure-values and calculates the dew point. All data can be accessed via LAN.

Cloud Connectivity

If required, all data can be transmitted to the Internet of Things services ThingSpeak and Xively. This lets you access your data globally and facilitates the integration into custom software systems via the interfaces provided by the cloud services.

Various Alerts

Querx THP can send emails, SNMP traps and Syslog messages to notify you if
-the temperature, humidity, pressure or dew point rises above or falls below configurable limits
-the temperature, humidity, pressure or dew point values rise or fall exceptionally quickly
-the values return to their normal range

Data Access via HTTP

All current and logged values can be retrieved in the XML, JSON and CSV file formats. This makes them accessible from the command bar and via Python, PHP or other programming languages.

Always up to Date

The Querx firmware is in continuous development and new functionality is frequently added. New versions are uploaded to the web periodically. You can determine which version your device is running and initiate an update right from the web interface.

Continuous Data Logging

The smart sensor saves the measured values once a minute. The minimum, maximum and average values are saved with a timestamp for at least 25 days and will not be lost, even if a power shortage occurs.

Mobile Apps

The Android and iOS apps Querx Discoverer and IoT Monitor give you access to all your recorded data from your smartphone.

Encrypted Email Alerts

Querx THP can notify up to four recipients of occurring alerts using two discrete email accounts. This ensures that alert notifications are sent even if one server fails.
The emails are encrypted (TLS / StartTLS).
The messages can be customized with text-variables, making them easily comprehensible.

Intuitive Operation via Web-Interface

Configuring and operating Querx THP is an intuitive process. The user interface is self-explanatory and a detailed online help section is also provided.

Quick Setup

Querx THP can be integrated into existing networks without any configuration being required. The smart sensor can be detected automatically by mDNS / Bonjour and it can be configured automatically via DHCP.

Querx TH
High-grade Sensors

Querx THP features integrated temperature-, humidity- and pressure-sensors. The sensors are oil repellent as well as splash- and dust-proof.

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.

Accredited Calibration Available

Calibration is an integral part of quality control. DAkkS-certification (German Accreditation Body) is available for Querx devices for a service-fee and can be purchased when ordering the product or at a later date.

Low Power Consumption

Querx THP is very efficient. The power consumption is less than 1W.

Extended Temperature Range

Querx THP works reliably even in unfavourable conditions. The device can operate at temperatures between -40 °F and 185 °F (-40 °C - 85 °C).

Power Supply via USB

An unused USB port or an external power supply can be used to power Querx THP.

Querx THP Specifications

Temperature Sensor
Measurement range-40 °F - 185 °F
(-40 °C - 85 °C)
Absolute accuracy±0.9 °F at 77 °F
±1,8 °F at 32 - 149 °F
(±0.5 °C at 25 °C
±1.0 °C at 0 - 65 °C)
Resolution0.2 °F
(0.1 °C)
Humidity Sensor
Measurement range0 % - 95 % RH
Absolute accuracy±3 % RH at 20 - 80 % RH and 77 °F (25 °C)
Resolution1 % RH
Long term stabilityTypically 0.5 % per year at 10 - 90 % RH and 77 °F (25 °C)
Sensor typeCMOS IC
Pressure Sensor
Measurement range300 - 1100 hPa
Absolute accuracy± hPa at 300 - 1100 hPa and 32 °F - 149 °F (0 °C - 65 °C)
Resolution0.1 hPa
Long term stability±1 hPa per year
Hardware and Interfaces
Measurement rate1 second
CalibrationFactory-calibrated, DAkkS-certification available
Ethernet10/100 Mbit RJ45, HP Auto-MDIX, static or dynamic IP (DHCP client)
SystemNut/OS 5
Firmware updatesVia web interface, recovery feature
Logging intervalConfigurable
M2M interfacesHTTP (XML, CSV, JSON), Syslog, Modbus/TCP, SNMP
Memory36.864 entries, ≙ 25 days (1 entry / min) to 4.2 years (1 entry / h)
Web interfaceInteractive diagram, live update, HTML5, CSS3, JSON and SVG
SecurityStartTLS / TLS, password protection, user management (3 users / 3 groups)

EmailUp to 4 recipients and 2 SMTP servers (StartTLS / TLS)
SNMPSNMPv1 agent and traps
Status-LED3 colors: Red, green, yellow
Date / TimeReal-time clock with battery backup and SNTP update
Voltage5 V DC - 5.5 V DC
Power consumptionTypically 120 mA at 0.6 W, max. 200 mA at 1 W
Ambient Conditions
Operation-40 °F - 185 °F, max. 95 % RH
(-40 °C - 85 °C, max. 95 % RH)
Storage-40 °F - 185 °F, max. 95 % RH
(-40 °C - 85 °C, max. 95 % RH)
Casing materialABS plastic, black, RAL 9011
Casing dimensions2.2 x 1.6 x 0.8 in
(56.3 x 40 x 21 mm)
Sensor cable13.4 in
(340 mm)
Weight0.07 lb
(35 g)
ConnectorsRJ45 (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


Click here to access tutorials, current firmware versions amongst other things.

Querx Accessories

Accessories for special tasks and spare parts.


Querx sensors can be ordered from our international business partners.

Querx THP Order Details

  • Querx THP
    Querx THP with integrated sensors
    Product number EGN601116
  • Querx THP Set
    Querx THP with integrated sensors + Ethernet cable, Micro-USB cable, USB power adapter (GB, EU, US or AU), documentation on CD
    Product number EGN601216