LH4000 intelligent hotel lock system The intelligent hotel lock system offers standalone solution to mere hotels demand on security and management which fathers 13.56 MHz Mifare card technology and hotel management software. The styled color of lock fit any type of hotel. With the hotel management software, hotels can perform essential management tasks quickly and easily with minimal truing. The body of lock is made by zinc alloy which is strong enough to protect the system from any considerable outside impact. Lock is powered by four high- capacity alkaline AA batteries that can last up to20,000 unlocking activities.