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Custom reliable data logging solutions

Eltek is one of the world's most trusted brands in data logging. The company has over 30 years of experience, designing and manufacturing its products in Cambridge, UK. Connected IoT is the Australian distributor for Eltek products.


Eltek's data logging products deliver a wireless or wired solution capable of any application. Solutions range from stand-alone devices with download/analytical software to large-scale systems delivering data to your enterprise systems via the cloud. 

If Eltek does not have an off-the-shelf solution, we can work with the head office to deliver a bespoke solution that meets your exact needs. 

Download the case studies:

Historic Building Condition Monitoring for Conservation
Customised built environment monitoring systems
Advanced Air Quality Monitoring
Building Performance Monitoring
In-vessel composting monitoring
Research Laboratory Monitoring and Alarm System
Museums monitoring

Building Condition Monitoring for Conservation

Eltek installation at Canterbury Cathedral

Wireless monitoring

GenII wireless monitoring


The GenII monitoring system is Eltek's long range radio telemetry solution offering a practical alternative to hard-wired data logging. It is suitable for both permanent and temporary installations, with easy system design and installation.

The system offers:

  • Licence exempt UHF frequencies

  • 250 sensor channels capability

  • 12 bit resolution for high accuracy

  • Repeaters to extend range

The system includes a range of fully integrated Eltek's GenII transmitters, receivers and data loggers

For more information, download the system brochure

Eltek Gen2 overview
Wired datalogging

Squirrel wired data loggers

Eltek's has employed a modular design for its Squirrel 1000 range of wired dataloggers. This approach provides a flexible combination of channels, ranges, memory sizes and extra options.

The main board contains the power connector, display, RS232 serial connection, a pulse input, an 8-bit digital signal input and output connector. Up to eight additional input modules are connected to the main board during manufacture depending on the sensor input requirements.

Features include:

  • Mains operated or battery with low power consumption

  • Up to 250 analogue or digital channels

  • Remote connection via GSM, landline or radio modem. LAN network adapter for Ethernet.

  • Adjustment of readings into appropriate units

  • Up to 2 million readings of secure data

  • 1 pulse count channel and 8 event/digital channels (plus more)

  • External triggers can start and stop the logger

  • Rapid memory download at 38400 baud

  • Up to 99 runs may be stored

  • 3-year guarantee

A cost-effective alternative to the modular 1000 series is the Squirrel 450/852 series of data loggers. This series has a maximum of 4 or 8 inputs, configurable for voltage, current and temperature, for both thermocouple and thermistors.

Eltek Squirell SQ1000 data loggers

Squirel 1000 series 

Eltek SQ450 data loggers

Squirel 450/850 series 

Eltek modular data loggers
Sensors and Transmitters

Sensors and Transmitters

Almost any sensor can be connected to the Eltek telemetry GenII system. Eltek offers a range of sensors for temperature, humidity, power and air quality including dust and particles to suit the most common sensing applications. The product range includes a variety of RF transmitters, many of which have inbuilt sensors or support external sensors with voltage or current output. 

The range covers:

  • Air quality

  • Air velocity

  • Differential pressure

  • Digital state

  • Electricity/energy usage

  • Flood 

  • Heat flux

  • Particles PM2.5

  • Humidity

  • Incubators

  • Light and UV

  • People counting

  • pH

  • Resistance

  • Pyranometer

  • Dust from building sites or fires

  • RH

  • Solar Radiance

  • Temperature

  • Tilt and Crack

  • Voltage and Current

  • Weather

  • Smoke and particles

Darca Software

Eltek's systems can output data to most industrial systems, such as Modbus, and serial data to a connected PC for integration into industry standard PC software, such as LabVIEW, DASYlab or Wonderware.

However, Eltek also provides its own download and analysis software that is fully integrated with its range of products. The products cover:

  • Darca Plus: Download and analysis for GenII systems

  • Darca Lite: Download and analysis of for Mini Squirrels

  • Darca Secure: With audit trail features, tailored for the pharmaceutical industry.

  • Darca Heritage: For large sites over long periods

  • Darca Compost: With batch tracking features

For more information, contact Connected IoT 

Eltek Darca software
Download and Analysis Software
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