The MCP3A Manual Call Point is supplied with one normally open and one normally closed contact. Selecting either the `Normally Open´ or `Normally Closed´ contact is easily achieved by simply connecting the terminal block to the required connection is in the back of the MCP3 product. Single pole changeover switching can be achieved with the use of two terminal blocks. Installation time and cost are important to fire installer. The MCP range directly reflects this need by providing a unique Plug and Play concept designed specifically to reduce installation time. All new MCP products utilise a special terminal block where all initial installation cabling is terminated. This terminal block is then simply connected to the back of the MCP. Simple, but effective, with no re-termination required and no time wasted.