The ASP-4 from Apollo EM is an intelligent 4 door controller, with native connection for four doors/four readers, expandable up to 20 total readers. It can be clustered with up to 31 others for up to 128 doors in a single management unit. In addition to utilizing OSDP Secure Channel, every communication path is secured via SSL 128-bit encryption for complete privacy. Communications are up to 100k card downloads in under 15 seconds and up to 250k cards and 100k events are stored on each device. The ASP-4 can be factory customized with app scripting and embedded software, allowing providers of access control software to easily combine native and programmed features in their own solution. The native Open Platform SDK allows quick and powerful integration and includes code samples, tutorials and online developer support. With configurable inputs and outputs as well as add-on capability, the ASP can be a multi-function device handing access, alarm and elevator features.