Hey guys, it’s Deddy Mike from Deddy Mike’s Life & Reviews, and in this video I’m unboxing and reviewing the PETZEE automatic pet door opener collar that works with the High Tech pet doors—specifically models MS-4 and MS-5. If you’ve already got that high-tech automatic pet door and you need a replacement collar, this is exactly what I’m talking about. PETZEE gifted this one to me to review, and I show you what comes in the box, including the user guide, plus a close-up look at the pastel purple collar (yeah, I actually like the color, guys). I also walk you through how to install the battery, because it’s super simple. It uses a common CR2032 battery (cheap and easy to find), and you just use a coin to twist the cover counterclockwise—just watch that little rubber seal so it doesn’t fall out. Once the battery is in (textured side down, smooth side up), you’ll see the green light and you’re ready to go. I also point out the practical stuff I like for real family life: adjustable strap for cats or big dogs, reflective strips for nighttime walks, waterproof build, and features like motion sensing to help prevent constant unwanted ultrasonic triggers—so you’re not inviting in “unwanted guests” like raccoons.