Abstract: A system for monitoring and controlling distributed functions within a building, such as the pressure and temperature of gases stored within cylinders. A plurality of modules are located at strategic points within the building for performing specific allocated functions in relation to monitoring and controlling the status of the gas cylinders. A first type of module detects dangerous conditions within the gas cylinders and generates and displays alarm signals in response thereto. A second type of module displays the alarm signals at a location remote from the gas cylinders and transmits command signals for remote shut off of a predetermined one or more of the gas cylinders. A central module interconnects each of the first and second modules and controls signal transmission therebetween.