Upgrade Security Design - Solid metal reinforced door lock designed to resist kick-ins and forced entry. - Withstand up to 800 lbs of force, about 12 times stronger than a typical deadbolt. - Each latch comes with 8 screws (4 long, 4 short) to fit different door needs for a secure installation. - A reliable choice for home security and a thoughtful gift for family. Easy to Install - Mount on the door frame with a power screwdriver and drill. - DIY installation in under 5 minutes; compatible with most inward-swinging doors. - Includes installation manual; support available if you need help during setup. Operation and Emergency Release - To operate: place index finger on top of the lock, thumb on bottom, slide the lock away from the base plate toward the hinges, then pull outward. - No tools required to open; with a little practice, it can be opened quickly. - Designed to be secure against forced entry while allowing rapid release in an emergency. Home Security and Child Safety - Spring-loaded design adds extra protection for toddlers when you are away. - Helps prevent young children from opening the door to unknown people. - Provides protection for the elderly or women at home alone. Practical Use Scenarios - Reinforce entry doors in homes, apartments, or rental properties. - Use while you are away on business or traveling for added security. - Suitable as a maintenance-free upgrade that improves overall door safety without permanent alterations.