• Water-proof key with service life up to 500,000 times 
• In case of server faults, the lobby phone can still call/ open door/ swipe card. 
• HLP-6050 standalone version is able to work without server support 
• Support building number /letter input 
• Up to 200,000 entrance cards (Mifare) can be stored at most, Support facility bulletin display 
• 6 groups of stem node points input, 4 groups of output, Support click-to-call administrator  
• Support 3 languages (English, simplified Chinese, traditional Chinese)