# A 3-Part Titanium Rescue Whistle That Combines Into a 120dB Siren A reliable sound source in emergencies. - **Source:** [Yanko Design](https://brifing.si/source/41d28791-ef47-4e0b-a40a-2a5efca0c11b) - **Published:** 2026-07-25 - **Topic:** [Product Management](https://brifing.si/c/product) - **Original article:** - **On Brifing:** https://brifing.si/s/21c9fcd6-2b47-4a07-8abd-9f7cb823585a ## The Problem with Traditional Rescue Whistles Most emergency equipment remains ineffective because people don't carry it. TriReso was designed to solve this problem, offering modularity and reliability to be always by your side. ## Acoustic Logic and Design TriReso draws inspiration from the acoustic logic of emergency sirens. Irregular and shifting frequencies are optimized to capture human attention, ensuring the sound is heard effectively. ## Advantages of Modular Design Three modules operate at different frequencies, making them effective in open areas, crowds, and windy conditions. When combined, they create a siren reaching up to 120dB. ## Durable and Reliable Materials With titanium and aluminum options, TriReso works in all weather conditions. The pealess design eliminates risks of freezing, corrosion, or clogging in the internal mechanism. ## Personalization and Ease of Use Equipped with tritium tubes, TriReso is easily visible in the dark. Custom engraving options make it a meaningful gift for loved ones. ## Daily Portability and Trust TriReso is designed to be a portable and reliable tool for everyday use. Its modular design and durable materials ensure it provides a dependable sound source in emergencies. ## Sources covering this story - https://www.yankodesign.com/2026/07/24/a-3-part-titanium-rescue-whistle-that-combines-into-a-120db-siren/?utm_source=rss&utm_medium=rss&utm_campaign=a-3-part-titanium-rescue-whistle-that-combines-into-a-120db-siren — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._