The SALTO CU42E0US KS XS4 2.0 Ethernet Door Control Unit offers dual wall reader connections that can be set up for two separate doors or a single door with entry and exit readers. It supports antipass-back mode by linking two wall readers as one door for enhanced security. Additionally, it features door and tamper monitoring through contact inputs, providing alarms for intrusion and door left open scenarios. This reliable access control solution is perfect for securing your premises efficiently. Upgrade your security system with SALTO today!