Monitoring device which can be inserted in an installation

摘要

Monitoring device (1) which can be inserted via measured value transmitters (S1-S16) into an installation to capture required information in the installation, the monitoring device (1) having a signal generating unit (call initiation and tone transmission) for generating signals (1275 Hz and 1850 Hz) which indicate the condition of each of various measured value transmitters (S1-S16) in the installation, and an activation unit (telephone call monitoring) which can be activated when a prompt signal is received for consecutive transmission of the signals for each measured value transmitter (S1-S16). <IMAGE>