A key aspect of fire protection is to identify a developing fire emergency in a timely manner, and to alert the building’s occupants. This is the role of fire detection and alarm systems. Depending on the anticipated fire scenario, building and use type, number and type of occupants, and criticality of contents and mission, these systems can provide several main functions. First they provide a means to identify a developing fire through either manual or automatic methods and second, they alert building occupants to a fire condition and the need to evacuate. We design and supply fire alarm security system that is used for alarming people in case of fire.