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Latest news

Latest news (21)

Latest news from Active Communication.

Below are articles about products and applications that help to describe the new and previous news.

Monday, 25 May 2020 16:38

W&T rule.box digital

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Assemble your IoT puzzle with the Node-RED based control center

With the "rule.box Digital 2xIn, 2xOut", Wuppertaler Wiesemann & Theis GmbH is introducing a switching and data center for the top-hat rail.

Monday, 03 June 2019 15:45

W&T Microwall

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W&T Microwall:
Small firewalls protect devices and machines in the network
Microwall Gigabit from the Wuppertal network specialist Wiesemann & Theis marks the start of a new selection of user-friendly security products for industry and manufacturing. The small firewall isolates potentially vulnerable or non-secure devices and machines in their own network segments. Communication with these secure islands in the network is limited to the cases necessary to ensure operation. This effectively prevents attacks on open TCP or UDP ports as well as unwanted data connections.

The Web-Thermo-Hygrometer ++ from Wuppertal Wiesemann & Theis GmbH records and monitors measured values ​​for temperature and humidity and provides them via various network interfaces. The drift-free humidity sensor has no saturation effects and is therefore suitable for precise long-term measurements even in environments with permanently high humidity. With deviations of only 0.1K and 0.5% RH both sensors are very precise.

Thursday, 16 August 2018 02:46

The road to better indoor climate

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To create a good indoor climate in a room, the temperature and air quality in the room must be optimal. The temperature is usually controlled, but when it comes to air quality, there are often problems. Many people ventilate the air in the room either manually or through ventilation systems without controlling the air quality. The result often becomes unnecessary energy to ensure a good air quality and ventilate when this is not needed.

Friday, 26 January 2018 11:12

USB-Server Gigabit is a Super Units

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USB Devices Easily And Quickly Anywhere On The Net

The Gigabit 2.0 USB server integrates a USB device into the network via TCP / IP Ethernet for industrial use. The devices connected to the USB server Gigabit 2.0 behave exactly as if they were connected directly to your Windows PC.

Tuesday, 09 January 2018 21:46

Google Go and Pure.Box Create Easy Control

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Make automation easier and faster !!!

Are you involved in exploring new effective methods for managing the automation process - if YES - then you must learn pure.box and Google Go to know.
pure.box is a small server for industrial communication and automation, and it does not fill more than 105 x 75 x 22mm.

Monday, 24 April 2017 18:02

New Web-IO 4.0 makes it easy to automate solutions

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In recent months, Wiesemann & Theis GmbH has prepared the network-based remote control units and the Web-IO family sensor for thorough inspection. Web-IO 4.0 is now available and offers, in addition to new protocols and enhanced security, a new and simplified user interface.
New communication channels have been added to configure the necessary protocols and interfaces, such as email or MQTT. It is easy to decide how the Web-IO device should behave against a particular state or event. It may be that it should send an email if the temperature becomes too high - or turn off a digital output upon receipt of an MQTT subscription.

Monday, 30 January 2017 17:02

MQTT: Industry 4.0 you can touch

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Terminal devices in the Internet of Things generally have no public IP address, but rather are connected over private networks. Cross-network connections can be opened only in the outgoing direction without a lot of additional effort. This eliminates peer-to-peer connections as a communication channel for the Internet of Things.

The solution is provided by the protocol MQTT: Terminal devices open a connection to a publically accessible messaging service, the broker. Here they can as publishers publish information and as subscribers subscribe to it.

Wednesday, 14 December 2016 14:32

Website in new design

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January 1, 2017, we introduced this new updated website designed and developed by the company Infoicon Software, a collaborate as we certainly can recommend.
Our goal is to build a website and shop tailored to our customers needs. The site is primarily suited to our corporate clients to ensure a quick overview of the products we can offer. Here below is tab with impotent news you will meet in this website:

Sunday, 21 June 2015 14:49

What are VOC in Air Quality

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VOC (Volatile Organic Compounds)

What are VOCs and where do they come from?

The English abbreviation "VOC" stands for volatile organic compounds, which are present in the air in gaseous or condensed form at room temperature.

Many solvents, liquid fuels and synthetically manufactured substances may be present as VOCs, but also many organic compounds which are formed in biological processes. Humans and animals give off VOC through breathing or directly from the skin.

The following table shows some typical VOCs for interior spaces and their sources:

Typical pollutants (VOCs) in interior spaces and their sources
Emissions source
Humans and animals
Acetone, ethanol, isoprene
Perspiration and transpiration
Nonanal, decanal, α-Pinene
Hydrogen, methane
Limonene, eucalyptol
Household materials
Alcohols, esters, limonene
(motors, ovens, cigarettes)
Unburned hydrocarbons
Building materials,
office equipment,
consumer products
Paints, varnishes, adhesives,
solvents, carpets
Formaldehyde, alkanes, alcohols,
aldehydes, ketones, siloxanes
Toluol, xylol, decane
Printers/copiers, computers
Benzene, styrol, phenol



VOCs and room air quality



(450-2000 ppm)




(0–85 °C)










 The quality of room air is not felt by persons only according to the actual values of temperature and relative humidity. Odors in the air are a significant reason why people feel unwell in such areas and feel compelled to quickly leave the space. 

Examples which we all know from experience include poorly ventilated offices and business, commercial kitchens, fitness centers and toilets and washrooms.

VOC in indoor spaces can also have a serious affect on health: 
Eye and sinus irritations as well as headaches, fatigue, lack of concentration and diminished performance - also known as "Sick Building Syndrome" (SBS) - may be a consequence of VOC in indoor spaces.

Reason enough to measure and control the presence of VOC!


Measure air quality with a VOC sensor


CO2 sensors are mostly used for ventilation control in office buildings, schools, educational and sports facilities. But since odors caused by VOC have little or no influence on the determined CO2 values, they are hardly detected by CO2 measurement. The consequence: Although there is an actual ventilation need, this condition is not recognized using traditional approaches.

As a rule the rise of VOC in indoor spaces is caused by humans - whether from breathing, perspiration or as a consequence of human activities. Therefore a rise in VOC over the base level in the room can be used as a good indicator for the presence of persons in the monitored area.




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