All our biometric / fingerprint locks run on 4 AA batteries. A set of batteries will easily last you a year. This means that during a power cut you still have access to your home or workplace.
You’ll be given at least two weeks warning that the battery is getting low. The unit will give you a warning each time the lock is used until the batteries are replaced.
If, in the worst-case scenario, your battery runs flat, you can connect an external 9-volt battery to repower the unit.
Of course, all our units also come with a key as a backup