Display Unit EH 5991 Display Unit Features . Display Unit EH 5990, EH 5991 . Exchangable front label for individual legending . As option galvanic separated RS458 bus . Protection degree for front side IP64 . Enclosure for flush mounting 96 x 96 mm . Display Unit EH 5990: - 8 fault signal LEDs on the unit - Reset buttons for audible alarm and common alarm . Display Unit EH 5991: - 8 fault signal LEDs on the unit - Without reset buttons Technical specifications Width: 96mm Enclosure design: Front panel mounting Optical signal: LED Special features: Bus-compatible Type: EH 5991 Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: EH5991 DC24V Art. No.: 0060584