The DS30 MINI Smart Deadbolt Lock is a versatile and durable electronic deadbolt built for residential doors, featuring a robust aluminum alloy front lock with your choice of fire-rated ABS or aluminum alloy rear lock. It supports convenient password and key access (with optional APP control for smart integration), operates reliably across a wide temperature range of -25°C to 70°C, and is powered by 4 AA batteries with a handy Type-C emergency power interface. Certified with FCC/FCCID approvals and compliant with BHMN Level 3 security standards, it offers dependable protection and seamless compatibility with various door handle styles, making it a practical and secure upgrade for any home entryway.