This access control is standalone access control which designed for single door. Support 1000 users and could connect to external Wiegand 26-44 RFID reader or Touch memory reader. It has two manager cards and could connect to any kinds of locks and exit button. Easy installation and operation. Input voltage: DC12V20% Quiescent current: 17mA Touch memory reader:DS1990A Electric lock output current: 3A (Relay output) User Capacity:1000 Unlock time: 1~128s Manager cards: 2 cards Communication distance to Wiegand reader: 100m Communication distance to Touch memory reader: 15m Operating temperature: -35~60 Max humidity: 90%,ROH Colour:Blue Material:plastic Package Contents: 1 x Access Control Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.