Introducing the Hanwha X100A-H003 X100 2-Door Access Control Expansion Board, designed to enhance your security system with ease. This advanced expansion board features a reliable RS485 port, allowing for seamless integration and communication with your existing access control setup. Its robust design ensures durability and efficiency, making it an ideal choice for both residential and commercial applications. Upgrade your security infrastructure today with this essential component that promises to deliver exceptional performance. Don't miss out on the opportunity to enhance your access control capabilities—order now!