The smart digital indicator is designed for the electronic display of a thermocouple (Type L, J, or K). Additional functionalities include limit monitoring, min/max value storage, hold function, and tare function. The device is equipped with two relays (changeover and normally closed) and a digital input. It features a simple, clearly structured operation supported by texts in the local languages: German, English, French, and Spanish. Process values, texts, and parameters are displayed on two 18-segment LCD screens. Additional display elements provide information about the switching states of the outputs, timer status, and temperature unit. Print terminals with push-in technology enable quick electrical installation. Operation, parameterization, and configuration are carried out via a membrane keyboard with four buttons. With the help of the setup program, the device can be comfortably configured with a PC. During configuration via the USB interface, no separate power supply is required.