Why choose us?

  • Comprehensive portfolio

    Wireless, wired and hybrid data logging

  • Proven reliability

    Used in critical and regulated environments

  • Expert support

    UK-based technical advice and system design

  • Scalable solutions

    From single loggers to enterprise-wide systems

For over 30 years, Eltek has been the trusted name in environmental monitoring and data logging, helping organisations across the UK and worldwide protect what matters most.

Now part of Grant Instruments, we combine Eltek's proven wireless monitoring systems with Grant's industry-leading Squirrel and dataTaker® data loggers, giving you a complete, scalable solution tailored to your needs.

From museums and heritage sites to laboratories, industrial facilities, environmental research and the built environment, Eltek has the expertise and technology to keep your critical environments monitored with confidence.

Get in touch

Markets we serve

  • Museum & Heritage

    Helping conservation professionals safeguard irreplaceable assets with precise temperature, humidity and light exposure monitoring.

    Learn More 

  • Laboratories & Life Science

    Ensure controlled environments stay within specification with precise, traceable data logging, ensuring data integrity and regulatory compliance.

    Learn More 

  • Industrial

    Optimise building performance through continuous monitoring of temperature, humidity and energy efficiency for sustainable management.

    Learn More 
1 3

See how we're helping businesses like yours

explore all sectors

Product Families

  • Eltek Gen II Wireless Systems

    Flexible environmental monitoring with long battery life, alarms and centralised software.

  • Squirrel Data Loggers

    Portable and fixed multi-channel data loggers for environmental, industrial and research applications.

  • dataTaker® Data Loggers

    Rugged, high-accuracy loggers for advanced research, field studies and complex measurement tasks.