The Müller Digital Indicator – Current Loop (M1-1S) digital display unit features a wide reading range from -1999 to 9999 and a compact design with only 25 mm installation depth (excluding the plug-in terminal). It offers flexible adjustment via factory defaults or directly through the sensor signal, and includes useful functions like min/max value recording, a tara function, and threshold-based flashing alerts. The unit supports up to 10 adjustable calibration points, access code programming interlock, and IP65 front protection. It also includes navigation keys for real-time threshold adjustments, optional PhotoMos switching inputs, and can be configured using an optional PC-based kit. Versions for extreme temperatures (-25°C to 60°C or -40°C to 80°C) are available upon request.