YDR 41A- Biometric Smart Lock suitable for Double Door and Sliding Door, vertical lockingJimmy proof lock is operated by a knob that controls a two part vertical bolt. The Main Door lock is engaged when the bolt descends or ascends into two rings on the strike. Because its secured on two sides, the angled strike provides greater holding power and greater resistance to excessive force used on the door itself. YDR 41 is especially designed for use with Double Door, Swing door or Sliding door. With its various access solutions: fingerprints,