For the best bud who loves bells and whistles， the Autoslide Elite Ultimate Motion Activated Pet Door Kit easily turns a heavy sliding door into a fully-automated pet door. Installation is easy. First， check to make sure your sliding door runs smoothly without interference. If everything is functioning properly， simply install the Autoslide system and mount the wireless infrared sensors so that the beam of light shoots across your Autoslide door. That way， your pet will activate the sensor whenever she passes through the beam. These sensors can be activated by anyone， so this is the best option when security is not a prime concern. The Elite motor is strong enough to open heavier or hard-to-pull sliding doors like hurricane-impact patio doors. What’s more， this system comes with a four-button remote so that you can activate the automatic patio door from up to 50 feet away and switch from Pet Mode to Automatic Mode with the push of a button. Let your pet open the door to discovery with the Autoslide Elite Ultimate Dog Door with Motion Sensor & Remote.