The universal, user-friendly compact devices in 1/16 DIN format (48 x 48 mm) & 1/8 DIN format (48 x 96 mm) are suited to precise & overshoot-free control tasks for aperiodic parameters & for limiting temperature. The controller can be configured & its parameters set online & offline with the Compact Config. It is conveniently operated via four buttons or the standardised infrared front interface. Furthermore, the software can also be used for viewing the control processes online & for interrogating & saving the values from the data logger & alarm history. With front end IP 67 protection, the device can not only be used in mechanical engineering & apparatus construction but can also be safely used in the foodstuffs & luxury foodstuffs industry as a two-point, three-point, constant, step or split range controller.