Door Chain Lock for Home and Hotel Doors Keep control over who enters without fully opening the door. This door chain lock is a simple mechanical limiter that adds an extra layer of entry control for apartments, hotel rooms, and rental properties. It restricts the door opening to a narrow gap so you can speak with visitors, check identification, or accept deliveries while maintaining a measure of security. Key benefits Adds an extra barrier against forced entry while allowing safe partial opening for communication or verification. Simple, lowmaintenance design that operates smoothly and reliably over repeated use. Compact and discreet appearance that does not interfere with normal door function when not in use. Quick to install and use, making it suitable for homeowners, renters, and property managers. What it does Functions as a latch safety limiter that secures the door in a partially open position. Prevents the door from being opened fully from the outside when the chain is engaged. Allows the user to open the door slightly for identification, ventilation, or passing small items without surrendering full access. Compatibility and fit Designed to fit most standard interior and entry doors, including wooden and metal doors. Lowprofile mounting fits common door frames and stiles and works on left or righthanded doors. Compact size keeps the chain close to the frame so it does not interfere with door trim or strike plates. Materials and performance Constructed from sturdy metal components to withstand everyday use and resist bending under normal force. Smooth chain action for easy engagement and disengagement. Durable finish helps maintain appearance with minimal upkeep. Practical use scenarios Home entry: Partially open the door to speak with unexpected visitors or delivery personnel while maintaining controlled access. Hotel or shortterm rental: Provide guests with a simple, familiar security option to use when they are inside the room. Apartment or shared housing: Allow residents to check visitors before granting full entry, useful for deliveries and service workers. Operation and installation Mounts to the door and frame with common hardware. Use basic hand tools for installation and position at a comfortable height for daily use. To use, attach the chain to the holder on the frame before opening. To fully open the door, release the chain and close normally. Regularly check screws and alignment and tighten as needed to maintain reliable operation. This door chain lock is a practical, nononsense accessory for anyone who wants a simple mechanical way to limit door opening while inside. It complements other door hardware without changing the primary locking system.