Collection: NFC Smart Padlock

Working Principle
An NFC smart lock is a "battery-free, keyless" electromechanical lock that can be opened or closed via wireless communication with a mobile device. Near Field Communication (NFC) technology is used between the mobile device and the lock. The lock consists of a mechanical part (the lock mechanism itself) and a built-in electrical control unit. The controller in the electrical unit first completes authentication from the mobile device, receives the command to open or close the lock, and then sends instructions to a miniature DC motor. Energy is harvested from the mobile device via an active NFC magnetic field and stored in a capacitor integrated into the lock system, powering the electrical components and driving the lock cylinder movement. If the lock mechanism is disengaged, the lock can be opened by turning, pushing, or pulling.