?This kind of Multi-door Controller applies to one- key styled control like access control machine£¬ electric lock and automatic door. It almost covers all functions on the access control requirement£¬ features card management authority with a two-way control. Also£¬ the Multi-door Controller support fire alarm linkage£¬ time and attendance£¬ access control£¬ video surveillance and other functions. It is a chance once in a lifetime for the low price and guaranteed quality. Besides£¬ our friendly customer service will allow you to enjoy the extra benefits beyond the buying. Have a try!                                    Features                Made of advanced material£¬ most stable and durable<br>    It is powerful£¬ covers almost all functions on the access control requirement<br>    Support multiple cards to open the door£¬ the first card password function<br>    Support fire alarm linkage£¬ time and attendance£¬ access control£¬ video surveillance and other functions<br>    It is easy to install and convenient to use<br>    Not included power supply<br>                                                            Specifications                        Management Doors     2    <br>          The Number of Card Readers can be Connected     2    <br>          Storage Registration Card of Permission Number     20000 (Remarks)    <br>          Can Store Records     100£¬ 000    <br>          Communication     RS485    <br>          Supporting Software     English Simplified Chinese Traditional Chinese version released simultaneously    <br>          Supporting Software to Support Database     Access and SQL    <br>          Dimension     17.9 x 12.6 x 1.8cm / 7.05" x 4.96" x 0.71" (L x W x H)    <br>          Weight     212g / 7.48oz    <br>                                                             Package Includes                1 x Intelligent RS485 Double-door Network Access Control Board<br>    1 x CD<br>