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Title: Very unreliable
Review: My experience with this product is similar to most of those stated. From day 1, the extender worked intermittently and unpredictably. It's mounted right on top of my doorbell chime. So, I don't really understand why the performance should be unpredictable.Over time, its performance degraded. Now (even with new batteries and the sensitivity turned up), it works less than 10% of the time. I give my strongest non-recommendation to this product.
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