Fire detectors are important in reducing violence and prevent damage to property and life exists in several ways. The study of detection techniques and performance of fire detector type smoke detectorA surface area dynamic. Application of random fire detection in the early stages. The test method standard, EN54 smoke detectorAnd test the surface area dynamic. By detecting the change from the photos. The result of testing the performance of smoke detector according to the standard EN54 smoke detector type steam auto ไนเซ technologies (Ionization) smoke detection time than 600 S2.(Optical) smoke detectors approximately 500 S2. For a period of time delay detection when compared with the standard EN54 resistance test events and interference from cigarette smoke and dust of construction.The efficiency to detect heat fault the hedgehog yam and reliability in calculation of heating period detection proposed calculation compared with the test อุปกรณ์ตรวจจับ.Test and detection techniques for space heating surface dynamic is another method used in fire detection efficiency.