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  • How are reviewers describing this item?
    great, better, combined and calibrated.
  • Our engine has discovered that over 90% high quality reviews are present.
  • This product had a total of 21 reviews as of our last analysis date on Oct 14 2016.
Reviews Summary

When the knocking sensor is installed, the camera never shuts off

I purchased this sensor in order to better detect who was at the door

In the meantime, the camera is working without the knocking sensor

However, with the sensor in place i can no longer push the button to view through the peep hole as a simp

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