Metal Door Chain Lock for Home and Hotel Security A simple, effective secondary lock that limits how far a door can open while you check who is outside. This metal door chain lock acts as a latch safety limiter and anti theft bolt, giving an extra layer of protection without blocking quick egress. Key benefits Increased security: Adds a physical barrier to prevent forced full entry when the door is partially opened. Controlled access: Allows you to open the door a few inches to speak with visitors, accept deliveries, or ventilate a room while maintaining safety. Easy to use: Quick to engage and disengage with one hand, suitable for everyday household use. Durable construction: Metal design resists daily wear and provides steady performance over time. Low profile: Compact hardware that keeps a neat appearance on the door and frame. Features and compatibility Function: Chains and latch limiter restrict door opening to a safe gap for verification and controlled access. Material: Metal construction for strength and durability. Compatibility: Works with most inwardopening doors including wood, metal, and composite doors commonly found in homes, apartments, and hotels. Installation: Surfacemounted design that fits standard door and frame setups; installation requires basic tools and mounting screws. Practical use scenarios Home entry: Partially open the front door to speak with an unexpected visitor while keeping the door secured. Hotel or temporary accommodation: Add a temporary security barrier for privacy and an extra layer of safety during stays. Family living: Use the latch to prevent young children from opening an exterior door fully while allowing airflow and safe supervision. What to expect A straightforward, functional secondary lock that enhances security and control at entry points. Ideal when you want a simple, mechanical way to limit door opening without replacing existing locks.