the JUMO iTRON DR 100 is a universal, freely programmable microprocessor controller suitable for a large number of technical control applications. As an option, the controller is available with a relay (changeover contact) or two relays (N/O contacts). RTD temperature probes, thermocouples as well as current and voltage signals can be connected to the freely configurable measuring input. The linearizations of the standard measuring probes are stored. A two-line alphanumerical LCD display is available for actual value and setpoint value display or dialoguing. The parameter setting has a dynamic structure allowing automatic application of the values after two seconds. The autotuning feature installed as standard establishes optimum control parameters at the touch of a key. The basic type also includes a ramp function with an adjustable gradient and a timer function. The iTRON DR 100 can be used as a two-state controller with limit value monitoring or as a three-state controller. The iTRON DR 100 is mounted on DIN rails and wired via screw terminals with a conductor cross-section of max. 2.5 mm². A setup program and a PC interface are available as accessories for easy configuration and parameterization on the PC.