The high-contrast, multi-colored LC display for process values, setpoints, and operator guidance consists of two four-digit 7-segment displays, two single-digit 16-segment displays, an active setpoint display, six switch position indicators, as well as indicators for unit, ramp function, and manual mode. Simple operation is facilitated through four buttons. The devices can be used as two-point, three-point, three-point step, or continuous controllers. Common features include four programmable setpoints, two parameter sets, a program function with eight sections or ramp function, a maximum of four limit comparators, two timer functions, two self-optimization methods, and quick, convenient configuration with a setup program and a program editor.