Integrated Systems and Devices Limited (ISDL) is a security engineering company that provides a total turnkey service for the design, supply, installation and continued effectiveness of security systems for medium and high risk sites. Our integrated approach offers our clients an easier and more cost-effective route to improved quality and long term reliabilty.The service begins with a detailed assessment of the prevailing threats and progresses through all the intermediate stages of system design, procurement, installation and commissioning right up to training and maintenance programmes.