Network Access Controller. TCP/IP Network Interface. 2 Card Readers (Wiegand Interface) Connectable. Storage for 10 thousands valid cards information and 50 thousands card swiping records. Working Temperature | -20°C to +65°C (-4°F to +149°F). Working Humidity | 10% to 90% (Non-Condensing). Dimensions (L×W×H) | 285(L)mmx237(W)mmx69(H)mm.