... of voltage to hint: 4.8v, can still open to lock 150 times above*Working humidity: >=93%*Antistatic ability: above 15 ... .*communication timely: manager the long-distance lock according to on-line system between server and lock.*moniter timely: monitor the doors status ... lost or any fault happens.*constitutes: prox card, prox card lock, EM key, P/Writer, management system, and communication encoder ...