Features: 1) Wireless system and stand-alone door lock: 998B-T adopts DALLAS TM card to perform control function and unlocking function, is completely independent and stand-alone, is controlled by program resident in the lock and activated by cards which are coded by issuing computer. All of these make installation and maintenance becomes simple and easy 2) Lock hardware is made of strong steel, to create impact resistant ability. High security lockset with a hardened steel deadbolt, an anti-pick latch and 2 pieces of anti-friction latches 3) High quality electrophoretic paint is used for the alumina escutcheon and solid alumina handle 4) Easy to use: The lock is operated by handles from both the inside and the outside of the door. Outside handle is fixed while in locking state; the handle can be turned only in unlocking state. The Inside handle can be turned always. When ingress, the guest the keycard then the lock unlocked, turn the outside handle to open the door; when egress, the guest turn the inside handle directly to open the door 5) "Panic release": Deadbolt and latch are automatically retracted by inside handle for easy egress 6) Superb reliability and Low running cost help to keep the running costs low 7) Mechanical key: The separate emergency mechanical structure will allow the unlocking by the mechanical key in emergency 8) Keycards are limited by lock's clock, when the guest's lodging is out of the deadline, the keycard will be invalid, so the guest has to take the card to renew 9) Keycards are grouped several levels to make the access authority clear. Hotel managers can modify the authority of each card according to actual need at any moment 10) Normal-open state can be set for meeting 11) Avoid waiter's incautious disturb: If the guest turns out the deadbolt inside the room, when keycard (except Master Card) the LED will flash in red and green alternately to remind the waiter that someone is inside the room 12) Report the loss of keycard: Even if your keycard is lost, you can keep quiet, the lost keycard can be invalidated by simple card operations on the lock 13) The lock memorizes the latest more than 200 access records to be checked for case, guar