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Old 01-03-2010, 10:27 PM
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Dougie55 Dougie55 is offline
 
Join Date: Sep 2009
Location: Edmonton
Posts: 204
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I have two of the 'Flag Alert' alarms, made by Nature Vision. The cold is hard on the 9v battery, but it does work very well. Very loud actually. I am not sure they make them anymore, as I haven't seen them in a couple of years. Not sure they are worth the money though, as bells are very effective. The only advantage may be that you can hear the buzz from over 50 ft away.
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