About our Melbourne-Based Security System Supplier

Who We Are

Twenty First Security is based in Mulgrave, Victoria and is in the electronic security industry for the long term. Investments in infrastructure and staff are examples of our commitment to enable us to be one of the best service and installation companies in Victoria.

We have a proven efficient installation and maintenance team, which we believe can provide a highly professional service to you. Staff are well presented, they provide quality workmanship and are trained to communicate with the client. Our people take pride in knowing they have given the utmost to ensure that your security requirements have been met.


Twenty First Security is a current member of ASIAL, (Australian Security Industry Association Limited). All our technicians are licensed by both Austel and the Security Industry Registry and trained in the latest security technology. This guarantees all workmanship is in accordance to the relevant Australian Standards.

Australian Achiever Awards

Twenty First Security is an Australian Achiever Awards Winner in the Australian Security Industry Services & Supplies category with a 97.61% score for customer service and relations, topping all other electronic security businesses. The 2004 Australian Achiever Award proves Twenty First Security delivers on the promise of customer satisfaction.

2003 Australian Achiever Awards Winner in the Australian security industry services & supplies category.Australian security industry services & supplies 2002 Australian Achiever Award Winner.2001 Australian Achiever Award winner Australian security industry services & supplies category.Received the 1999 highly commended distinction from the Australian Achiever Awards.

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