May 13th Taiwan faced a large-scale of power outrage. Most of the lock installed in public is fail safe type in which when the power is out, the lock will be unlocked. That means there is no access security to protect your door to remain locked. SOYAL supports Electric Bolt Lock Fail-Secure type in two dimension and equipped with European Cylinder Lock； AR-1207B-29-F and AR-1207B-36-F
During emergency situation or power outrage， door will remain locked and you can still open door using mechanical key as it is built-in European cylinder lock.
For installation using battery or UPS， choosing fail-secure type of lock will consume less energy than fail-safe type lock to provide energy in longer time than fail-safe lock in general.