The TM591 has the following functions:

Display the measured values and alarm status of all instruments on site
Display the alarm events of all instruments on site for easy accident recall
Monitor the OK status and operation status of all instruments in real time
Set the zero point and alarm values of all instruments on site
Provide remote reset and remote doubling interfaces for controlling all instruments
Provide the interface for system keying and signaling
Provide digital Provide digital status monitoring interface