Posted By: ROCHELLE BALCH, SCOTTSDALE, AZ
High Tech stands behind their products. I had some issues the older MS-2 collar (no longer made), for my auto pet door (installed in the glass sliding door) - I've since upgraded to the new MS-5 collar and I'm very satisfied with that collar. BTW, about 2 years ago I had the door itself re-furbished thru their service, and it continues to work great. I have 4 large dogs.
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