With a growing emphasis worldwide on a proactive approach to managing the protection of our environment and resources, it makes perfect sense to use 21st century technology to achieve this.
The key elements of this technology for useful monitoring are:

  • Sensors – analogue, digital, serial, pulse, custom…. if you can sense it we can almost certainly monitor it
  • Robust proven scalable systems – local intelligence, capture store data, local back up batteries, transport data seamlessly and securely to our servers
  • CDLSmartHub for management of your systems. Immediate graphical analysis, trending, alarms, audit trails, data downloads, dashboards, etc. Reporting and admin hierarchies aligned to your existing business reporting methods

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The distributed intelligence of CDL wireless sensor systems is ideal for monitoring buildings where diverse input sources are needed. A CO2 sensor here, a temperature and relative humidity sensor there, a power monitor somewhere else all linked to a weather station maybe, and a visitor counter… up to 256 per base station… all battery powered, simple to install, with a range of 100’s of metres, and capturing and storing data locally for return to a base station at user specified intervals.

From there your data is seamlessly and securely transferred across the mobile phone networks to the CDLSmartHub. there you manage your system, see data interpreted into trends, set alarming thresholds and alarm recipients, download graphics or raw data, management reports and transfer data to other building management systems. These systems are in use in a number of iconic buildings ranging from the 900 year old Westminster Hall to the futuristic IIPSI building at Warwick University

Historic buildings

We have been providing environmental monitoring solutions since we began in 2008. Our systems implement the latest in wireless technologies, and securely transmit data from industry accepted sensors to the CDLSmartHub where users can view, interrogate and download data that has already been uploaded and is available from any device, anywhere at anytime.

Earlier this year Caption Data were commissioned by the Houses of Parliament to help them  understand the internal environment of Westminster Hall, by implementing a network of cutting edge battery powered wireless sensors to record timber moisture levels, temperatures, and humidity. The sensors which are no larger than tennis balls were camouflaged to go unnoticed to the thousands of tourists who visit the 900 year old parliamentary building.

Case Study – Environmental monitoring at the Houses of Parliament


While much is known about the events that took place in Westminster Hall’s 900 year history, in reality little is known about the internal atmosphere. That is why Caption Data have been commissioned by The Houses of Parliament to provide a remote monitoring system to monitor temperature, humidity, and moisture content in the Hall’s magnificent hammer-beam roof.

Robin Walker MP said “Hopefully 21st century internet based monitoring from Worcester based Caption Data will help preserve this fabulous building for many more centuries to come!”

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With well over 5000 sensors in use in damage restoration around the world, this is core market territory for Caption Data Limited. We work daily with most of the major players and our systems regularly prove the return on investment that our clients expect. We have developed a range of sensors especially for this marketing including the award winning HygroBug.

Insurance companies and loss adjusters increasingly require remote monitoring and Caption Data range of systems, including the famous HygroNet™ range and RDL//1000 for long distance systems.

Major operators value the intelligence Caption Data remote monitoring systems offer and the dashboard potential to manage their resources real time, keep track of virtual visits, carbon footprints and link to their own management systems.

Case study – thank god for HygroNet

HygroNet Family

“Thank God for Hygronet!” says Borge Enga one of Polygon AS [Norway] Project Managers.

Borge explained further details in a recent conference call with CDL, the makers of HygroNet™. The story began with an instruction for Polygon to deal with water damage in a rather unusual property – a house of some 180m2. The house not only had many rooms with many different construction techniques, but it had valuable wooden ceiling panels that were to be protected at all costs!

Borge proposed a drying plan involving a number of small capacity fans and dehumidifiers to create the minimal environmental stress to the building and the all important ceilings. He also installed Hygronet™ remote monitoring sensors to the property.

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How to use the HygroNet

Below is a playlist of videos showing ‘How to use the HygroNet’ in conjunction with a range of drying equipment.


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Caption Data have been active for many years monitoring parameters such as:

  • Chlorine
  • Nitrate
  • Turbidity

  • Level
  • Flow
  • Pressure

Using the RDL//nano range of products we can acquire and report data back from virtually any sensor to the CDLSmartHub, set alarms, present data, run algorithms, link to management reports and dashboards with geo-positioning graphics.


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Based on more than a decade of experience in vibration data acquisition and development of our own products to seamlessly and securely transfer data to our own CDLSmartHub we are actively involved in the areas of

  • Shock & Vibration monitoring in buildings, structures, capturing data from Geophones
  • Ground borne shock & Vibration Monitoring, capturing data from Geophones
  • Interfacing with noise meters to provide remote telemetry of their output


We also sell MSR miniature data loggers for discreet monitoring (not web enabled) of acceleration, temperature, humidity, pressure, light and more. These are used in a vast range of applications from the international space centre to myriad applications in the air, on the ground and under it!

Find out how the RDL//Vibe works with a range of geophones

Find out how the RDL//nano enabled telemetry from instruments

Find out more about the unique MSR range


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With ever increasing pressure on companies to “do the right thing” in terms of social responsibility as well as complying with legislation and best practice, energy monitoring and efficiency is big news. And is only set to get bigger with narrow margins of spare capacity at a national level and the arrival of ESOS. Caption Data only operate in the B2B sector working with commercial firms to help measure and then manage their energy efficiency programmes. You can only manage what you can measure, and our systems provide granularity with ease of use via the Internet and the CDLSmartHub. Think “smart meters” in the home environment but applied at a commercial and industrial level.

Want to know more about ESOS?

Voltage optimisation

With the RDL//nano we can link to energy meters with any kind of serial output, send configuration information and retrieve data. This is sent seamlessly and securely via the mobile phone network to our servers. The CDLSmartHub provides you remote access from any internet enabled device on any browser to configure your meters, choose and set reporting patterns & alarm thresholds, view trends graphically, automate reports, monitor audit trails, share information.

Find out how the RDL//nano does this

Need to be convinced about data security?

Sub Meter Monitoring

The distributed intelligence of Caption Data wireless sensor systems is ideal for monitoring energy at a sub meter level in buildings. Battery powered wireless sensors can quickly be installed with up to 256 per base station; simple to install, with a range of 100’s of metres, capturing and storing data locally for return to a base station at user specified intervals. From there it goes seamlessly and securely across the mobile phone networks to the CDLSmartHub. there you manage your system, see data interpreted into trends, set alarming thresholds and alarm recipients, download graphics or raw data, view management reports and transfer data to other building management systems

Want to know more about the RDL//1000?



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