The Vacant/Engaged Bolt Door Lock Indicating Latch can identify which room is available, so your guests don't have to spend a long time looking for the toilet. The Latch Indicating Lock is made of zinc, polished chrome and satin nickel, and is secured by surface mounted bolts. It can be directly mounted on a cubicle or flat panel door, and is very durable. The Vacant (green)/Engaged (red) indicator light will easily indicate whether the room is occupied, which can avoid knocking on the door when it is closed, which is very convenient. The emergency lock switch is perfect for toilets, showers and bathrooms or public places, such as: volleyball courts, gymnasiums, airports, train stations, hotels, restaurants, shops, shopping malls, offices and other public toilets. The indicating door lock can operate smoothly and smoothly. If the door is accidentally closed, there is an emergency hole on the outside to open the locked door when it is accidentally locked, which helps to unlock it from the outside in any emergency situation. Emergency efficiency situation.