24-hour Central Monitoring and Management Signal Alarm and Video. The First Alarm Receiving Centre in Greece. With a track record of over 35 years, we offer reliability and confidence in the Security of your property, 24 hours, 365 days and nights a year. HERMES is located and operates in Athens. Our facilities and work place are continuously upgraded and equipped with the most technologically up-to-date security systems and sophisticated software, whilst the 24-hour Alarm Receiving Centre supports all communication protocols for all types of alarms.