- Durable Construction: Crafted from thickened zinc alloy with a sleek satin nickel finish, this security door lock is built to last. It is anti-rust and designed for durability, passing a rigorous 72-hour spray test—double the industrial standard of 24 hours. Expect a lifespan of 8-10 years under normal conditions. - Enhanced Home Security: This lock provides an additional layer of protection against home invasions. When answering the door, keep the latch secured to speak to visitors while maintaining your safety. - Childproof Design: The latch is conveniently positioned at the top of the door, allowing toddlers to safely open the door without being able to exit. This feature effectively prevents children from falling down stairs, making it an ideal solution for childproofing your front door. - Advanced Mechanism: Featuring a user-friendly spring and pin system, the latch locks into three distinct positions: latched, straight out, and fully open (0, 90, and 180 degrees). This simplicity ensures reliable operation. - Smooth Operation: The flip-bar action is designed to be smooth with a noticeable notch at the halfway point, confirming whether it is latched. The latch maintains its position securely without wobbling, while still allowing for easy flipping back and forth. Use Scenarios: 1. Home Invites: When you have guests at the door, keep the latch secured while you converse, ensuring safety against potential threats. 2. Child Safety: Perfect for families, this latch prevents young children from wandering outside, especially in homes with staircases or busy areas. 3. Multi-User Homes: Ideal for shared living spaces, the lock provides peace of mind for roommates or families by reinforcing home security and child safety. This security door lock combines robust durability with practical safety features, making it an essential addition to any home.