General description This large secure key box is designed for high security and convenience. Made from durable aluminum alloy, it is resistant to water, corrosion, and weather, making it perfect for outdoor mounting. The protective cover shields the combination dials from unpredictable weather conditions, ensuring reliable performance. Technical specifications Material: Durable aluminum alloy Inner dimensions: 11.5 * 8 * 4.3 CM Unlock modes: 4-digit digital code and emergency button Maximum combinations: 9,999 Installation Includes 4 screws and 4 nylon expansion wall anchors Can be mounted on any solid surface No additional tools or work required for installation Usage Ideal for securing house keys, office keys, and large car keys Can also store small items like credit cards and ID cards Suitable for home, garden, office, and various outdoor activities