Fuzzy logic controllers simplify user setup while offering accuracy not found in other controllers. These controls use a fuzzy logic algorithm to perform PID (Proportional, Integral, Derivative) control. Autotuning monitors system reaction relative to control output and calculates the PID constraints. This eliminates the time consuming and complicated user setup. Overshoot on startup or setpoint changes is virtually eliminated. Fuzzy logic technology responds quickly to process disruptions, resulting in stable and accurate temperature control. This advanced technology is so reliable that the controllers are backed by a three year warranty.