The SPC52 license upgrade allows to increase the controller capacity from a SPC42 controller and it combines in an optimal way intrusion and access functionality in one system and can be expanded according to specific customers and project needs with up to 128 zones (8 on-board), 128 outputs (6 on-board), 16 system keypads, 16 doors, 8 verification zones. The controller provides 2 X-BUS ports (2 stubs or 1 loop), 16 areas, 500 users with different access levels, memory for 10’000 intrusion and 10'000 access events, integrated Web Server, 2 terminals for the pluggable PSTN and GSM/GPRS communication options, on-board Ethernet interface. The system is expandable with a TwoWay wireless receivers and supports up to 64 detectors (mixed with wired zones). The panel comes in a tamper protected metal housing with space for optional 7 Ah battery and 1 additional expander.