POTTER VSA-1eBayProduct OverviewThe VSA 1 is a UL Listed, self contained sound detection system designed to protect both reverberant and non reverberant vaults, including bank and mercantile environments. Engineered for high reliability, it features an integrated controller and microphone, automatic and manual balancing options, and a built in accumulator capable of registering up to nine pre alarm signals below the standard threshold. Installation is simplified
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