Profile: King-Fisher Co. designs, manufactures and engineers emergency communication & fire detection systems. We specialize in critical protection systems monitoring, and radio reporting. We also manufacture fire alarm control panels, transmitters, receivers, and mass notification systems. Our AC2 accessory cabinet provides an economical enclosure, ideally suited for field trouble shooting and easy maintenance of system wiring. This surface mount cabinet is fabricated from 16 gauge steel with red textured powder coat finish. Our model 2251TMB is a photoelectric smoke detector with supplementary 135°F thermal. This detector uses advanced on-board software to combine the signals from the photo and thermal elements. This software creates a true multi-criteria detector capable of rejecting nuisance sources, but still responding quickly to real fires.