The BLE Locking Standard module is small and ultra low power. It can operate on 24V-230V AC, 50/60 Hz or 12V DC.
It has one relay and the relay's pulse length can be changed by the owner, from the BLE Locking app, to match the desired opening time for the lock. Additionally, the app allows the owner to send a digital key to anyone that needs access. Keys can be issued for single or multiple use and, if desired, for specific dates and times.
See the Installation Guide and Technical Specification for more information.