This UHPPOTE 12V Electric Strike Lock Fail-Safe is designed for glass doors without frames. It has a holding force of 500kg/1100lb and operates on 12VDC/200ma. It also has a lock status output of NO/NC/COM and is fail safe, meaning it is unlocked when power is removed. This electric strike lock is perfect for those who need a reliable and secure locking system for their glass door without frame. It is easy to install and use, and provides a secure and reliable locking system.