This microprocessor-controlled controller is used for temperature control with high measurement accuracy. The multi-sensor sensor input can process resistance sensors and thermocouples as well as 0...10V or 4...20mA. The PID control and/or thermostat control can be activated via parameterization. The outputs are a relay contact, a voltage output for SSR relays and an analog output. Red LED lamps show the status of the output relays. The setpoints and parameters are set using a membrane keyboard with four keys.