1. READ BEFORE BUYDue to different oven designs, the oven can still be opened by 12cm under locking condition. Pls measure the distance of the door oven, the distance should less then 0.78''(20mm), the distance of two knobs should be more than 4.4'(11cm), otherwise it can't use. WARNING: If your oven is under working position, pls take good care of your babies, our products can not take supervison of adults. 2. Easy InstallInstall the oven lock with durable and heatresistant tapes, no drill and tools need. Tape with strong viscous (Effect will be better after 72 hours.) The stickness can anchor up at least 35 lbs! Removed without any residual, no harm to the oven surface. 3. REVOLVING Double Button DesignThe oven lock can revolving for 180°, a simple 'locking unlocking' setting for your convenience. Double button design makes it hard for babies to open but easy for adults to open/close with one hand. Push the oven lock gently can change the lock from unlocking position to the locking position. The updated oven lock's button color is the same to the lock, avoid babies curiosity to play with the locks. 4. Why need itPrevent little hands from opening the oven and getting injured or burned;Keep little ones from kitchen accidents.