I love my @High Tech Pet wifi controlled electric dog door. I used to have the slider insert (patio door), but when we built the deck we decided to install the pet door into the wall. I can control the door through the app, which also allows me to set an open/ close schedule and sends notifications to my phone. My boys have ultrasonic* receivers on their collars, which allow them to go out to the fenced in yard and back into the house as they please. The door closes automatically (I can change the sensitivity giving them more or less time to go through) and it has other safety features and sensors so it never closes on a dog. I am not sure who enjoys the freedom more, me or the pups ! *EDIT: The collars are ultrasonic not bluetooth. The wifi door model was setup via bluetooth but the actual collars are run by the small battery in the collar. #dogdoor #dogsofinstagram #dog #pet #petfriendly #servicedog #mobilityassistancedog #yellowlab #labradorretriever #poodle #poodles #pups