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Case Study - The Natural History Museum

CB70 - Lux and UV sensing

Recent Product information

How to choose which Mini Logger I need


Eltek delivers targeted and innovative solutions for challenging monitoring projects and applications and provides you with on-going support.  This month's case study is a great example of how we do this.  Our case study is all about the touring exhibition at the Natural History Museum.  I'd like to thank Gill Comerford, Senior Conservation Manager at the NHM for her significant contribution in preparing this case study, which shows how Eltek products have addressed the challenging requirement to combine data from a remote touring exhibit in Singapore with data from the fixed exhibits in London.  Please do have a read of the case study by clicking the link below.

With museums and conservation in mind, we are also presenting our new Lux and UV light transmitter this month.  The product has been re-styled to fit discretely in the museum environment and the team here at Eltek have designed the unit to be compact, easily mounted at an appropriate angle for light monitoring, including an external socket for rapid programming.

With kind regards, 


Temperature, Humidity and Light Monitoring at the NHM

The Natural History Museum is a long standing customer of Eltek Ltd.and we are delighted to be able to give you an insight into how our wireless loggers are used at the museum.  What you may not be aware of is the huge scale of the activities at the Natural History Museum.  In addition to the museum in West Kensington are several storage facilities, and in addition to that is the Touring Exhibit, currently in Singapore.   Around 600 Eltek transmitters are installed at the various locations.   All of the artifacts need to be monitored and maintained under the appropriate storage conditions regardless of whether they are on display, so the installation at the NHM includes many hundreds of transmitters in multiple locations all feeding into the Darca Heritage 2 software package.    Please read the case study to find out how Eltek has been able to help monitor the touring exhibit.

Please contact us for further information.
+44(0)1223 872111
Link to NHM Case Study - Click here to read

CB70 Lux and UV light monitoring
We are pleased to announce the introduction of a new Lux and UV light sensor, specifically styled to meet the cosmetic requirements of display cabinets.   This unit is substantially smaller than the current GL70 model whilst maintaining the performance and battery endurance specification of the trusted GL70, it is supplied with simple mounting options to allow its orientation to be adjusted in accordance with the light conditions of the installation.  For larger batch sizes we can supply this product in a different colour, please contact us if you have a specific requirement.

Please contact us for further information.
+44(0)1223 872111
Link to CB70 datasheet

Recent Product Information

Eltek's family of Rh/T probes

Eltek offer a range of Rh/T probes to work with it's GenII wireless transmitters.  We have recently introduced a small size probe for applications where access is restricted.

Please contact us for further information.
+44(0)1223 872111


Air Quality Monitoring Transmitter

We are now undertaking initial customer assessments of our built environment Air Quality monitoring system and would be delighted to hear from you regarding likely demand and possible applications for this product.  Interest so far has been good, and routine production will commence by the end of this year, in the meantime if you have a requirement please contact us regarding delivery.

The AQ110 Air Quality Monitoring Transmitter gives you a compact solution to multi-parameter Air Quality Monitoring.  This IP40 rated unit has the following built in gas and air particulate sensors:

  • CO2                               Range:         0-5000ppm
  • Relative Humidity        Range:         0-100% non condensing 
  • Temperature                 Range:         -20ºC to 70ºC 
  • CO                                 Range:        0-500ppm 
  • NO2                               Range:        0-20ppm 
  • VOC                               Range:        0-50ppm 
  • Particulates                   (Air flow 0 to 5 L/minute) 
                                           PM1    0-1 µm particles
                                           PM2.5 1-2.5 µm particles
                                           PM10    2.5-10 µm particles 
  • Sound Pressure level  30 to 130dB*
* = Via socket for external EX407750 sound level meter

With excellent Eltek wireless capability, this unit can be located wherever required and along with other units can then be linked to one of our range of receivers for data logging or real-time monitoring.

For pricing and availability please contact us:
by emailing
Link to AQ110 datasheet

Mini-Logger product range
How to choose what I need?
I need a compact stand alone basic logger......
Choose Mini Squirrel  MS series products

I need a compact logger, but one day I might need to expand to a multiple transmitter system.....
Choose logmitter LM series products

I just need a transmitter, but my data is critical and I need to be sure it’s backed up in case of transmission failure...
Choose M series devices

The Mini Squirrel
The first release of the GenII MS “Mini Squirrel” series is intended for RH, temperature and CO2 applications. 

The dataloggers are battery operated and ideal for short or long term environmental monitoring.

Mini Squirrel is ideal for monitoring smaller spaces such as galleries or laboratories. A feature of the Mini Squirrel is ease of deployment and data download. A top panel mounting jack socket is provided for data download.

The scrolling LCD display provides real time sensor values and screen prompts inform the user that the logger is set up and ready to go as required.

Eltek’s Darca Lite Windows software is designed for use with the MS Mini Squirrel, enabling the user to configure, download data, and graph historic data quickly and easily.

For pricing and availability please contact us
by emailing
Link to Mini Squirrel datasheet

The Logmitter

The GenII Logmitter range is a series of devices launched by Eltek in 2017 that can be configured either as a conventional GenII transmitter or as a standalone datalogger.  

Eltek’s GenII Logmitter is a first in that you get a compact self-contained and highly accurate device that is a logger or a transmitter as required.

System Operation
Configured as a logger and deployed alone, it is ideal for smaller spaces and short term or temporary events in sites such as galleries or laboratories. For large buildings, e.g. city block museums, storage areas or research laboratories, it can be deployed as a transmitter with other Logmitters which are also configured in transmitter mode, reporting to a receiver.

Used together with Eltek Darca Heritage software, which is designed for conservators and collection managers alike, it provides the ideal solution for detailed environmental audits and day to day monitoring. Logmitter simply grows with your expanding requirements with all data available on a common platform.

For pricing and availability please contact us:
by emailing
Link to logmitter datasheet

Transmitter with backup memory

The GenII M series is a family of transmitters that incorporate standard GenII transmitter features plus backup memory, which safeguards data should a temporary interruption of the logging infrastructure occur. 
Designed to meet the data reliability targets for the pharmaceutical and laboratory sectors, the first release of the GenII M series includes models with inputs for thermistor, thermocouple, and PT100 sensors together with built-in RH and temperature and inputs for incubator monitoring applications.

System Operation
The GenII M series retains the standard GenII transmitter specification and adds 12,000 readings of built-in memory in continuous overwrite mode. This means many weeks of data can be held in the transmitter.
The logging interval is configurable, and is ideally set to be the same as the system logging interval. However the back up memory logging interval and therefore memory usage and granularity can be optimised depending on the user's requirements.
Data is downloaded using the TX download program and is saved to the PC in Windows CSV format. Each reading consists of the reading value and time stamp. 

For pricing and availability please contact us
by emailing
Link to backup memory datasheet

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