... use it to Stick to the door of the cabinet, refrigerators ,cupboard ,so that it can lock cabinet ,refrigerators ,cupboard ,then ... When you close the door it can automaticly lock it .if you want to open the door you just need to open ... models. 4)As a manufacturer, our price are competitive. 5)Our factory have had a good reputation of making high ... any time, to get the latest price. Baby safety door lock