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![Dry Test Holiday Detector Test](https://images.findtheneedle.co.uk/findtheneedle/products/17988446.jpg)
The detector provides, via a phosphor-bronze brush, a stabilised D.C. output voltage across the non conductive waterproofing membrane under test. Detection of breaches is by an audible tone and a visual spark from the search electrode.
For more information on Dry Test Holiday Detector Test talk to Surveyroof Ltd
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