... steel..4.Low voltage alarm.5.Stable quality.6.Professional manufacturer in China,OEM design avaiable.7.Lock card type:Temic card ... ,mifare card,T5557 card,IC card ,Magnetic card,EM card. Software ... System :Furniture office lock,open door card,Encoder,software ,and the Energy saving switch. Working theorySoftware installed on the computer,then use the ...