LTS LTK2804 Access Control 4 Doors Controller 32-bit high-speed processor TCP/IP network communication, with self-adaptive; network interface. The communication data is encrypted to ensure information security; Massive storage with 10 thousand cards information and 50 thousand card swiping records; Data can be permanently saved when the access controller is powered off. Key Features of LTS LTK2804 4 Doors Access Control with Keyed Metal Enclosure 32-bit High Speed Processor Up to 4 Wiegand Card Readers 10, 000 Cards Record 50, 000 Event Record Anti Passing Back, Authentication Password with Keypad Card Reader Video Verification Log Search with Video Playback