Abstract: An improved collective protection system (CPS) alarm is generally comprised f an electronic circuit board terminal box that is readily connectable to any selected point of a ship power bus system. The system is provided with a plurality of pressure transducers that are selectively disposed in associated remote zones to be continuously monitored. A master monitoring panel is connected to the terminal box and is provided with a pressure indicating meter and a series of three red, yellow, and green lights corresponding to each remotely monitored zone. Separate slave panels allows monitoring of light status at additional locations such as a pilot house and/or a damage control station. The system is appropriately shielded to prevent EMI or RFI interference.