1. Vacant or Engaged Indicator: This door lock is specifically designed for toilets, restrooms, and bathrooms, providing a clear indication of room status. The red color indicates "engaged" while the green color signifies "vacant," ensuring easy recognition for users. 2. Durable Construction: Crafted from zinc alloy, this door lock is robust, sturdy, and resistant to rust. Its smooth finish offers a modern look, and it is engineered for frequent use, ensuring long-lasting performance. 3. Easy Installation: Featuring a straightforward design, this door lock can be installed on various door types, including bulkhead doors. It accommodates plate thicknesses ranging from 12mm to 18mm and includes all necessary hardware for a hassle-free setup. 4. Versatile Applications: Ideal for both residential and public facilities, this indicator bolt is perfect for use in airports, train stations, hospitals, shopping malls, and office buildings. It effectively enhances privacy and convenience by clearly indicating the room's availability. 5. Key Features: - Functionality: Clearly shows room status to prevent interruptions. - Material: Made from durable zinc alloy for enhanced longevity. - Compatibility: Fits door plates with thicknesses of 12mm to 18mm. - Performance: Designed for high-frequency use, ensuring reliability. This door lock is an essential addition for any space requiring privacy and clear communication of room status.