RS-485 serial controller, complete with DIN Mount for fitting into PAC 4- or 6-way DIN Mount enclosures. Complete with DIN Mount for fitting into PAC DIN Mount cases (p/n 10031 and 10032) 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 RS232 and RS485 for communication to PAC Access Central or EasiNet Residential software