I actually bought this product for my SimpliSafe wireless siren so I can install it outside without worrying about it being destroyed by the elements. This product proved to be waterproof (although I had it the day before so not sure how it would compare to heavy water pressure) and also allows my siren to be heard after the alarm goes off (the siren is the same db as fire alarm ). I installed it at home using strong M3 bars, but you can use mounting screws if you prefer.
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