The 701P is a conventional optical smoke detector ideal for use with the Tyco FireClass range of conventional fire alarm control panels. The 701P Smoke Detector operates by sensing the optical scatter from smoke particles generated in a fire. These detectors are suitable for general applications and areas where cable overheating may occur, for example, in electrical services areas. The 700 Series Intelligent Conventional Fire Detection Range is the first conventional detector range from Johnson Controls that uses algorithms to determine fire conditions more precisely. This provides superior performance and improved false alarm rejection rates. Through innovative design, the built-in micro-processors in the 700 Series detectors offer built-in drift compensation which extends the life of the detectors, thereby reducing service costs to the customers. Installers only need one fitting to complete the installation. The 701PH Detector has EN54-29 approval.