Title: Don't Buy - Many do not work!
Product review: I purchased 4 of these for swimming pool gates. I set my new 4 digit code according to the instructions. On two of them, it works and I can lock, unlock, etc. just fine. On the other two I can set them, then then scramble the numbers and lock it and then open it ONCE and they work. But after the first time they "loose" the code and cannot be re-opened. On these two I had to pick the locks to get them off my gates which was a real hassle and close call that I almost had to replace the gates. When I finally got them off, sure enough the same routine. I reset them, they closed and re-opened ONCE and thereafter will not open to the code. Unfortunately, Amazon does not stand behind their products and will not take the two defective ones back since my fence and gates weren't ready for the locks until just after the 30 days expired. BTW, if I can pick these locks, then they certainly are not very secure from any bad guy.
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