Listen to audio:
The Estonia’s Nationwide Public Warning System, known as EE-ALARM, has successfully completed nationwide testing. The centrally controlled electronic siren network is fully operational and ready to protect the population in real emergency situations. The system integrates electronic sirens, central control software and secure communication infrastructure into a coordinated national warning solution. Currently covering approximately 65% of the population, primarily in urban areas, the network enables rapid and clearly distinguishable emergency alerts across the country.
Development of Estonia’s National Public Warning System
The development of Estonia’s nationwide public warning system began in 2022, when the Estonian Information Technology and Development Centre (Ministry of the Interior) selected Telegrafia as the official supplier of the electronic siren network. The project aimed to establish a modern, centrally controlled outdoor warning system capable of delivering fast, reliable, and clearly understandable emergency alerts across the entire country.
The nationwide electronic siren system was designed with a strong focus on operational reliability, rapid remote activation, high acoustic performance, and seamless integration between hardware, control software, and communication infrastructure. This integrated public safety solution ensures efficient mass notification and strengthens Estonia’s national emergency preparedness.
National Electronic Siren Network Coverage
Today, Estonia operates 121 electronic siren points in more than 22 towns and cities. Locations were determined based on population density, risk assessment and civil protection requirements. The network currently covers approximately 65% of the population, primarily in urban areas where immediate warning capability is essential.
The electronic sirens are designed primarily to alert people outdoors. The standard warning signal lasts approximately four minutes and consists of a rising and falling tone repeated three times with 30-second pauses. This acoustic structure ensures that emergency alerts are clearly distinguishable from routine environmental noise.
System Architecture and Technical Validation
The EE-ALARM public warning system combines electronic sirens, a central management platform and secure communication infrastructure into one coordinated nationwide system. Emphasis was placed on system stability, synchronised activation and reliable sound transmission.
Before deployment under live nationwide conditions, the system underwent structured technical validation. Tests verified activation speed, communication performance, acoustic output and overall operational reliability. These technical assessments ensured that the nationwide warning system meets the standards required for real emergency scenarios.
Nationwide Testing of the EE-ALARM System
On 30 October 2025, Estonia conducted a coordinated nationwide test of all installed electronic sirens. The objective was to confirm activation speed, system synchronisation and the reliability of the centrally controlled warning network under real operational conditions.
The results were highly positive. All sirens were activated within seconds, confirming proper functioning of the control electronics, communication links and central management software. The test demonstrated that the nationwide public warning system is stable, responsive and ready for operational use.
Acoustic Field Measurements with the Pavian 3600W Siren
In addition to nationwide activation testing, comprehensive acoustic field measurements were conducted using the Pavian siren 3600W. Tests were performed at distances of 150 metres, 800 metres and 2,000 metres to verify sound pressure levels, audibility and speech intelligibility.
During these measurements, technicians provided real-time remote technical support. Alarm profiles were configured and adjusted online according to predefined warning scenarios. Different acoustic profiles were applied depending on the type of emergency to ensure optimal intelligibility and sufficient coverage. This optimisation process is essential for achieving reliable warning performance in real-world conditions.
Live Nationwide Public Warning Test
A nationwide live warning test was conducted on 10 December 2025, during which sirens were activated across Estonia under real operational conditions. The exercise successfully demonstrated the functionality, coverage, and operational readiness of the EE-ALARM public warning system, confirming its preparedness for real emergency situations.
Regular system testing will continue in the coming years to ensure long-term reliability, verify technical performance, and support ongoing system development. Periodic nationwide testing is an essential component of a resilient and effective public warning system, strengthening overall emergency preparedness.
EE-ALARM as a Reference Project for Modern Warning Systems
The EE-ALARM project demonstrates how a properly designed nationwide warning infrastructure can integrate electronic sirens, central control, acoustic optimisation and systematic testing into a resilient public safety framework. It highlights the importance of precise configuration, structured field measurements and continuous technical verification.
For public authorities, the benefits are measurable. A centrally managed and regularly tested electronic siren network reduces response time, strengthens national preparedness and enhances overall public safety. For citizens, it ensures timely and clearly recognisable alerts during critical situations.
As a reference implementation, the EE-ALARM network confirms how modern electronic sirens and professional system integration can deliver a dependable nationwide emergency alert solution. Real-world implementations such as EE-ALARM illustrate how modern electronic siren networks can form the backbone of resilient national warning infrastructures.
The article was written by
Monika Pavlik
Monika is an international business manager for Balkan, Benelux and Scandinavian states. She worked with a diverse range of organisations, including government institutions, IGOs in the field of migration, private sector and non-profits. The mentioned experience laid a sound foundation for a challenging and meaningful job she has in the Telegrafia Company. Therefore, she is very excited about bringing you the latest news from the field of early warning and notification systems.