The CPX-A area alarm is used to monitor pipeline pressure within a ward, theatre etc. The pressure is monitored by pressure switches in the pipeline downstream from the last AVSU. Pressure is monitored for both high and low pressure (low only for vacuum). The integrity of the cabling between the pressure switches and the alarm panel is monitored, and a fault on this cable will result in a system fault alarm, with all affected alarm conditions going into alarm condition. Simple connection: Just 3 cores connect the alarm to the end of line components, regardless of the number of gases. Simple maintenance: All connections (including mains) are plug & socket. The alarm components can be changed in about 1.5 minutes.