Mercury HMI Ltd


Mercury HMI is a specialist supplier of Data Entry & Processing equipment for use in hazardous and environmentally challenging locations. Mercury HMI Ltd was formed to take forward the renowned Intrinsically Safe HMI and security products designed by Spectra-Tek UK Ltd.

As well as being able to supply and give support for products that reach back over 25 years, Mercury HMI Ltd has updated the product line and is developing advanced and innovative versions of the products.

  • Mercury 2+ Terminal
    Designed for use in hazardous areas, rugged construction and intrinsically safe certification enable the Mercury 2+ to be used in Zone 0 (Div 1) locations.
  • Sentry Card Reader
    For the necessary protection and control of personnel access, the Sentry card reader is designed for operation in the most hazardous and harsh environments.
  • R507 Interface Module
    A Safe Area DIN rail mounted device which provides the intrinsically safe power and communications signals to the Mercury 2+ and Sentry Card Reader in hazardous areas.


Mercury HMI Ltd hold the following Quality Certificates:-

  • Sira 04 ATEX M307
  • ISO 9001:2000 041602 
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