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Courtesy of the Tonga Red Cross Society social media publication, we are pleased to share the successful testing of the BONO stand-alone all-in-one sirens.
Even the most basic sirens can do the job
Many options of Bono sirens provide advantages through early tsunami warnings
- All-in-one horn design that offers easy installation and compact dimension.
- Unique light-aluminium alloy horns proven to be sustainable in most marine-based weather environments.
- Loud decibel level with clear penetration of alarm or spoken message.
- Excellent intelligibility of voice messages, both pre-recorded alarms and live voice messages.
- Possibility of combining multiple voice and alarm messages with different tones and lengths.
- Embedding the siren into the hardware battery, which is crucial for its operation after a power outage.
- Wireless GSM activation done by sending a text through SMS or a specific application.

Even seemingly simple devices can undoubtedly provide exceptional performance and functionality when designed with innovation. Below are some publications on multi-purpose siren use for tsunami early warnings delivered to the people of Mo’unga’one from the Tonga Meteorological Office by radio.
Siren early warning system testing in the community after being fixed, when tsunami warning this will be the sound that the community will understand and evacute: https://fb.watch/sOoXdXRxey/?
Siren testing from Tonga Meteorological Office:https://fb.watch/sOoPrrIVMY/?

The article was written by
Michal Rosinski
Michal has lived in six countries, and he can speak four languages. He represents Telegrafia in the USA, Asia, Australia and Germanic countries as an international business manager. He is a big fan of Jamie Oliver, eats healthily, but he still loves unhealthy food. He does not agree with Mark Twain that people can live on a good compliment for two months. Michal is a bookworm, believes in experience-dependent brain neuroplasticity that takes it roots in the idea of what we focus on. He agrees with Raj Koothrappali that Aquaman sucks; he is familiar with the fact that not Mount Everest but Olympus Mons is the tallest mountain known to man.