Smart screen-letter system Escape room prop by YOPOOD $170.00 4.3 inch - $170.00 7 inch - $235.00 4.3 inch 7 inch 样式 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Product Name: Smart Screen-letter system Function:After input 4 correct letters,the lock will be released.