Monitoring device for switch box with operation restricted to monitoring of preset threshold values

摘要

Monitoring is restricted to predetermined threshold values. Optical and/or acoustic indicators (3.1) signal under- or overstepping of at least one threshold value, until reset by maintenance personnel. Monitoring device (1) has square shaped housing (2) with detachable cover (2.3). It contains microcontroller (2.2) to control indicators and receive and process input from sensors.