How can I unlock the hotel without a room card?

Hotel locks can be opened without a room card for the following reasons:

1. Door lock failure: The door lock of the hotel may fail, resulting in the abnormal use of the room card. In this case, you can contact the hotel engineering department for maintenance, or contact the door lock manufacturer, and send the parts for maintenance after being appraised by technicians.

2. The battery of the door lock is dead: If the battery of the door lock is dead, the room card cannot be used normally. This situation requires replacing the battery or contacting the hotel staff.

3. Card with normally open function: You use a card with normally open function to keep the door lock in a normally open state. In this case, as long as you swipe any valid card, you can return to normal.

4. Factory settings have been restored: the hotel staff set the door lock in the factory, which caused the room card not to be used normally. In this case, you need to reset the door lock or contact the hotel staff for handling.

5. Sensor system failure: The sensor system of the hotel door lock failed, resulting in the room card not being used normally. In this case, you need to contact the hotel staff for maintenance.