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Review title: Battery Intolerance
Product review: My unit was incredibly sensitive to the battery used, even among the major brands and within the same brand. With each rejection I checked the battery voltage. All rejected batteries were close to 9v and most were above. I found one rechargeable that worked but only for several months.WARNING: When working with the unit or testing wear ear protection!!! It sounds off at full volume unexpectedly.Another negative is that as stated on the unit, it may take up to 15 minutes to respond.On the plus side the voice description of the alarm is nice.
