Feature: 1. Material: Made of plastic, wear-resistant, long-term use. 2. Automatic opening and closing: When pets enter or leave the bathroom or bedroom, the door can be closed and opened automatically, so you don't have to get up and open the door yourself. 3. Humanized design: This tool can help control the entry and exit of pets, allowing your cats and dogs to enter and exit the room freely, and improve the intimacy and dialogue between you and your pets. 4. Safe to use: The sturdy housing and internal components ensure perfect performance, whether it is scratched, bumped or dropped. It is not easily damaged on doors and walls. 5. Easy to install: No tools are required, and the pet door can be installed in a suitable position according to the height of the pet. 6. Application: Pet door accessories can be used in bedrooms, bathrooms and places with doors. 7. Installation steps: 8. Step 1: First install the white sliding door. Make sure that the pet can determine the position of the white flap according to the height of the door. 9. Step 2: Let the pet practice and let your pet be familiar with the door. 10. Step 3: Install the lamps. The more rings you put on the white pane, the more time it takes to open the door. Conversely, the fewer loops you put on the door, the easier it is to open the door. Specification: Material: plastic Color: White Size: about 250x140x140mm Rope length: 1.1M Color box size: 29*26.5*4CM Package List: 1x pet safety door 1x elastic rope 2x fixed buckle