I have the Harbor Freight alarm to use on my front step. It is so sensitive
that anything will set it off. I have adjusted the location and have partly
covered the lens up to focus the target area that I want to monitor. This
has really reduced the false signals.
I thinks that the Chamberlain brand sensor sold by Northern tools is probably
a better sensor, So much so that I have ordered one for another
application.
CATCH YOU LATER, ROBO
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