Conventional Combination Heat/Photoelectric Smoke Detector is consisted of smoke sensing and semi-conductor temperature sensing parts in processing and circuitry. Matching with P-9907 Active End of Line Unit (AEOL), it can be connected with conventional fire alarm control panel or intelligent fire alarm control panels through I-9319 Addressable Zone Monitor Unit to execute signal processing. This non-addressable detector has the advantages of both conventional photoelectric detector and rate of rise and fixed temperature heat detector. Just because of the combination technology of smoke detector and heat detector, it overcomes the non-sensitivity to dark smoke particles of ordinary scattering type photoelectric detectors. It can also pick up fire with obvious rise of temperature such as alcohol fire, thus extending the application range.