https://www.wiltronics.com.au/product/37752/mini-piezo-siren-105db-small-tweetie-pie-siren/
Mini Piezo Siren 105dB - Small Tweetie Pie Siren | Wiltronics
A small and compact 105dB mini piezo siren, "Tweetie pie screamer" generates a loud sound while maintaining a small design. Low price, shop now!
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https://www.sancoelectronics.com/6x40mm-Fast-Pulse-Piezo-Siren-ALarm-pd46878760.html
Piezo Siren ALarm | | - SANCO
6x40mm Fast Pulse Piezo Siren ALarm | SANCO
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