1.No plastic, Cast-steel integrative structure, stainless steel surface with international fashion stainless steel color( has ten years using life). arrive international lever 2.Open door by using the RF card near the lock light about three cm, when the green light turn on, turn handle. 3.There is a hole down the front plate for POS picking the records easily 4.The handle lay with no connection, less scrape with other parts, prevent them into damage 5.Luxury,suitable for three-star or more superior hotel, can equip 50 pieces in a day. 6.Door thickness request no less than 3.8 cm More 1.Perfect electronic keys management, many types of keys belonging to some levels, clear authority. 2.The black box in the lock can store500latest open records, which can facilitate the hotel security and enhance the hotel credit. 3.The hotel management software is also offered. Be Controlled by DIGI hotel management software system. 4.Adopt USA induction card technology. 5.Save over 500 messages, even pick these records easily 6.Change battery most easily in China lock