Designed to work with Apple home kit using Bluetooth smart technology. Lock holds up to 30 access codes at a time. Easy to set up and program using the Schlage Sense app. No fees or subscriptions. Homeowners can assign codes or designate phones through the Schlage Sense app. Apple HomeKit technology provides advanced security with end-to-end encryption and authentication between the Schlage SenseTM smart deadbolt and your iPhone, iPad or iPod Touch. Schlage Sense Smart Deadbolt Camelot with Bluetooth Technology. Uses 4 AA alkaline batteries (included). ANSI/BHMA approuved, grade 1. Limited Lifetime mechanical and finish warranty, 3-year warranty on electronics.