AVA SYSTEMS recommends and offers APC (Agreement on Periodic Control) or APS (Agreement on Periodic Service) on all installed systems using the TraceTek leak detection technology. This means a planned and systematic annual inspection/service of all key components such as software, connections, sensors and sensor cables. In the same way that we plan and carry out a periodic check of the car and assume that this is crucial for operational reliability and stability in daily performance, the same naturally applies to any technical systems. Systematic and professional inspections are especially important for systems that will necessarily have to have sensors placed and installed in harsh and technically challenging environments. Regardless of system, technology or supplier any alarm system will quickly loose its value and credibility with an increasing number of false alarms.