2,100 users, user data can be transferred. Multi access modes: Card, Card or PIN, Card with PIN and multi Cards/PINsCan with any reader with Wiegand 26~37 bits output. Can with any keypad reader with 4bits, 8bits (ASCII), or 10bits Virtual number outputSupport Master Card function; Support set principal card; Can communnicate with mobile byWifi(this is optional and it carefully)Remotely open the door within your home network or remote from anywhere you can get internet access with your smartphone or User Capacity:2,100Zone 1:2,000Zone 2:100Operating Voltage:9~24V DCIdle Current: Less than 30mAIdle Current (With Wifi): Less than 100MaRelay:Adjustable Relay Output Time:0~99 Seconds (5 seconds default)Lock Output Load:5 Amp MaximumWiegand InterfaceInput:Wiegand 26~37 bitsOutput:Wiegand 26~37 bits (for user transfer)Environment:IndoorOperating Temperature:-40oC ~ 60oC (-40oF ~ 140oF)Operating Humidity:0~90%RHDimensions:L100 x W86 x D26(mm)Material: ABScolour: blackPackage Contents:1 x Access Control Board1 x english manulOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.