I have been using the above mentioned "intermediate freeze alarm". for several years now. I first learned of it a number of years ago while lurking THIS VERY FORUM and couldn't be happier with the product. I use it in my second home in upstate New York which I keep heated all year long. Several points that have not been mentioned yet about the alarm:: you set the "alarm" conditions as you want them. Set the temp that you want to set-off the alarm [hi or low temp] Amount of time the power to the house has been off before the alarm is triggered and the condition of the back-up battery. You can call the unit as many times a day as you want to and you can change any of your settings from any other phone, you do not have to be at the unit location to make changes.
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