Smart deadbolt lock with 2.4 GHz Wi‑Fi connectivity, no hub required | Five unlocking methods: mobile app | fingerprint | PIN code | RFID card | mechanical key | Includes: exterior lock | interior lock | 2 RFID cards | 2 mechanical keys | deadbolt latch | installation kit | user manual | AutoLock function | Activity logs and notifications for access events and failed attempts through the Nexxt Home app | Supports up to 30 users with individual access codes | Materials: Aluminum alloy exterior lock | Aluminum alloy interior lock | Acrylonitrile Butadiene Styrene (ABS) battery cover | IP65 weather-resistant rating | Powered by 4 AA alkaline batteries | USB Type-C port for emergency power supply | Battery life of up to 10 months, depending on usage | Compatible with iOS 11 or later and Android 6.0 or later | Exterior Dimensions: 13.64 cm x 6.50 cm x 1.60 cm / 5.37" x 2.56" x 0.63" | Interior Dimensions: 13.9 cm x 6.81 cm x 3.00 cm / 5.47" x 2.68" x 1.18" | Weight: 0.92 kg / 2.02 lb | Compatible with residential doors 3.51 cm to 5.51 cm thick / 1.38" to 2.17" | Operating Temperature: -20°C to 55°C / -4°F to 131°F | Available colors: Black or Stainless Steel | 2-year warranty | Country of Origin: China.