Mine was terrible when I first got it. It would not open consistently. I called to complain and they asked if I was using a duracel battery like the manual said too, when I said no. They said to go buy an actual Duracel battery, I thought they were nuts.
I went and bought a real Duracel 9volt battery and sure enough it works perfect now and has for about 3 years. I changed the battery this summer for the first time. Ed
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