Engineered for resilience, the zinc alloy body with IP65 certification resists water, dust, and extreme temperatures (-20°C to 55°C). Its dedicated wall-mount design ensures secure installation both indoors and outdoors, standing strong against rain, snow, and harsh environments. Powered by 3 x AAA batteries (not included), the lock box sends real-time low-battery alerts via the app. If power runs out, use a USB-C power bank for instant charging for immediate access - no more lockouts due to dead batteries. The reinforced zinc alloy cover against tampering and impacts, while the spacious interior securely holds 5 keys, 3 access cards, and 1 car key fob. Its dustproof and anti-pry design keeps valuables safe in any setting. Take full control of your keys with the free TTLock App - generate anti-peep virtual passwords (6-9 digits) and share time-limited access permissions with family, tenants, or cleaners. Tailored for homeowners, for hosts, and realtors, the app lets you create minute-specific temporary codes. Streamline short-term rentals and property management with 50% faster key !, Weight: 1.15522225288 pounds, Manufacturer: NONDK