|The C4 system is BPT's entry-level burglar alarm system - the ideal solution for users looking for a system that is simple to install, easy to use and with a full range of functions but modestly-priced. The C4 range comprises three central units for 2, 4 or 8 zones, complete with electronic key. The guided installation menu, the amply-dimensioned integrated display and the immediately-accessible function keys make programming simple and quick. The controls on the main unit and the optional control devices (keys, inserters and stylish modern keyboards) provide the user with complete diagnostics and system status, and make day-to-day operation a simple, intuitive task. Compact burglar alarm systems by Brahms: the perfect blend of reliability, simplicity and design.