Complete with metal case, lock, tamper switch and 3Amp PSU Manages Access through Two Doors – Read In/Out when using PAC and PAC64 output readers Up to 20,000 Keyholder Database – based on 1 credential record per Keyholder 3Amp Thermal Fuse protection to Lock Relays Local Anti-passback Built in TCP/IP for communication to PAC Access Central or EasiNet Residential software and RS485 for secondary PAC 512 Controllers