I’m not the person you asked, but I use microchip-based feeders for my cats and the company also sells microchip doors. I’ve been pretty happy with the feeders, but haven’t had any reason to try the doors.
https://www.surepetcare.com/en-us/pet-doors/microchip-pet-door
I have two cats - one is allowed outside and eats all the food in sight, and another that’s indoor only and likes to graze, I have their smart feeder and smart cat flap, which allows me to control which cat is allowed to access what and at what time, setting curfews, and seeing if they’re in or out. Would recommend.
I have one of these too for my cat, and it works really well. Hasn’t run out of batteries yet since I bought it several months ago. And it stopped the catfood thieves of the neighbourhoud entering my kitchen uninvited.
Don’t hesitate to contact their customer service if you ever have problems with it. They’ve helped with things no other company would. For example, one of my cats figured out how to open the door when it was locked (they’re not allowed back outside at night). I sent them a video of the cat escaping and they sent me a new, modified door that fixed the problem. I couldn’t believe they did that.
