The AC power/phase monitor signals indicate that the electrical power has been lost to crucial manufacturing/assembly-line equipment, computers etc. or that phase (single conductor) has been lost which may result in damage to motors, transformers, etc.
Temperature sensors indicate high or low temperatures that might cause problems for equipment.
A low temperature signal indicates that room temperature has dropped below an acceptable temperature setting and that a possible freezing condition exists.
A high temperature signal is typically utilized in freezers, computer rooms etc., and indicates that the temperature has increased past a desired setting or equipment rating.
[definition coming soon…]