Product Description: Master Sturdy & Safety: The key lock box is made of high strength zinc alloy and solid steel, which makes this lockboxes much durable and sturdy, protect the box from hammering, sawing or prying. You can securely hang this lock box on door knob, fence or anywhere you like, Or you can wall mount it on the wall. Wireless & Convenient: The Bluetooth key lock box features the universal Tu.ya Smart APP that allows owners to remotely grant access to others, and they don't need to download and use an app. Choose from PIN codes, Fingerprint or IC cards to grant permanent, duration, one-time or recurring access for convenience and security. Query access records, Send security alerts. Multi-way to access: Fingerprint to unlock, high-precision and fast identification, even wet fingers can be quickly identified. 10-digit combination lock, provides more than 100 billion password combinations, making it impossible for thieves to enter. Comes with 2 IC cards for easy to unlock the box. Weatherproof & Durable: This portable lock box is rust-proof, corrosion-resistant and waterproof, great for indoor and outdoor use. Featuring SPCC metal material to offer protection from rain, snow, jamming or freezing, which makes the box works well under -4 to 158 temperature, no big deal to hide a key. Designed for hassle-free sharing: The key lock box allows you or others to access the key at any time, which perfectly suitable for daily use, home services, pet sitters, Airbnb and real estate business. The Smart Keybox comes with more space for your convenience. Internal dimensions: 3.5*2.5*1.2 inch (H*W*D) Technical Specification Connectivity Bluetooth 4.0, WiFi (Gateway Bridge is required for both tuya and ttlock version) Material: Zinc alloy Lock panel sizes: 165*72mm Unlock mothod: App, fingerprint, code, card Batteries type: 4pcs AAA Alkaline batteries. Color: Black Level of protection:IP65