... system 1.Electronic lock character1,Suitable for hotel ,apartment,office,residential door;2,Door thickness requirement is 38mm to 60mm ... security;7,Door openning in 1-2 seconds when the RF card on the sensor cover of the ... set of mechanical key for emergency,the lock hole was maked hidden below sensor cover;10,Audit trail records ... package6 factory7 welcome to locstar keyless door locks for hotel