Starcom Systems Helios Track&trace User Manual page 8

To configure the smaller Unlock button as an emergency button, select the
Use the Remote Control's small button as an Emergency option in the
Hardware tab.
Click Send to send the changes to the unit.
Now you can use the larger Lock button to Arm / Lock / Disarm / Unlock and
the smaller Unlock button as an Emergency button.
Remote Control User Guide
Arm / Lock
Disarm / Unlock
Emergency
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