The 230 V mains connection of the 'Voice alarm panel Compact 1000' PC1002-A3 is divided into 2 connectors: the mains connector 'X100' and the mains connector 'X102'. The 'X100' is used to connect the mains connection and connect the mains filter. It is in the upper left of the cabinet. The 'X102' is connected to the output of the mains filter and is used to supply the internal components with 230 V. The power supply, the mains filter, 2 amplifiers and the PE to the cabinet are already pre-assembled.