The 5600 series offers a full-line of configurations to accommodate a broad range of applications. Both single and dualcircuit models are available for low and high temperature ratings with either fixed temperature or combination fixed temperature rate of rise (ROR) activation. The ROR element of the fixed/ROR models is restorable to accommodate field testing. System Sensor’s 5600 series mechanical heat detectors offer a low-cost means for property protection against fire, and for non-life-safety installations where smoke detectors are inappropriate.