Blackbox Security | fire & security

0141 812 0999



Emizon 21 provides dual-path signalling via IP (broadband) and the GPRS network to transmit signals.

Having two signalling paths means that there will always be a back up path in the event of an accidental or deliberate fault on either.

For more information on Emizon 21 please visit:



  • Dual-path signalling
  • Signals via IP (broadband) network
  • Signals via GPRS network
  • Insurer and Police approved


  • Great job and would recommend to others!

    By Mrs Jennifer McFadyen  
  • I moved to Black Box from another alarm company, saving over £500 per year.

    By Bruce Dick, John Dick & Son Limited  
  • I have used Black Box's services in both commercial and domestic contexts over a period of 15 years.

    By Jim Stewart, Lawprint & Stationary Limited  

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