Samsung EZON Keyless Digital Door Lock Smart Push-Pull DoorLock SHS-P520 Push Inside， Pull Outside Model Installation is simple， and there is no damage to the door. Color : Black Outside Body Size : 84(W) * 228(H) * 61(D)mm Inside Body Size : 84(W) * 228(H) * 63(D)mm Power : 1.5V AA size 4EA