... system for hotel use. Include the software and hardware, card etc. RF card lock System:ONLENSE hotel lock, computer, lock software, ... Encoder, T5557card or Mifare-1 card, energy saving switch A. System ConstructionONLENSE set of locks, computer ... together to ensure security.3. Cipher coding to key card Each card has a different code that cannot be copied. Compulsory ...