Kupan is the first to integrate Led light in toilet locks. A great advantage is that you can see from a greater distance if the toilet is free or vacant. It has a save 12 Volt power supply. Toilet and shower cubicles are fitted with silent locks, these make those cubicles the most ideal for hospitals and offices. The walls are 30mm thin and they can block noises and give privacy if they are fitted from the floor till the ceiling. The production of these walls is way cheaper than metalstud and traditional walls.