Unopened, unused item! Are you worried about small children or babies opening doors unattended and going outside? This child safety product prevents such worries by locking the door. It's easy to install, just stick it on the door frame with the included sticker, and can be used as a child lock to prevent accidents and injuries, or as a simple, add-on room key for children. It can be used not only as a baby safety door stopper to prevent danger, but also as a keyless lock for accident and injury prevention, and as a countermeasure against mischief by pets such as dogs and cats. Are you worried about your child opening the door unattended and going outside? This product easily solves such concerns. It's a mini type, so it doesn't take up much space. Installation is easy, just stick it on with double-sided tape. By using a special adhesive sticker made in Japan, the adhesive strength has been significantly improved compared to conventional products! Also, unlike conventional products that can only be used on flat surfaces, it can adhere to slightly uneven surfaces. It uses a one-touch lock, so you can unlock it with one hand. It can be used for security measures, accident and injury prevention, and as a safety lock. Product size: Approximately 3.5 x 7.7 x 6.5cm (when folded) Material: Aluminum Body weight: 150g 【Included】 Main unit x 1, double-sided tape x 2, screws x 8, instruction manual x 1 【Installation method】 1. Wipe the installation surface clean. 2. Apply the double-sided tape (if using screws, drill holes and tighten the screws). 3. Stick the product at your desired height. *After pressing and adhering it by hand for about 1 minute, please use it after 24 hours. 4. Hold both ends of the lock and pull. 5. Turn to the other side to release the lock. * We are not responsible for any damage, injury, or loss caused by the use of this product.