Every alert has an alert type, which describes the conditions it needs in order to activate.

High alerts activate when your measurement goes above a certain setpoint. Low alerts activate when it goes below the setpoint.

These are the two most common alert types.

Equal/Not Equal alarms are mostly used on digital readings. This allows you to trigger an alarm once an input has gone to a very specific point.

These alerts allow you to raise an alert if a value goes outside an expected range ('outside') or wanders into a dangerous range ('inside').

Unlike the other alert types, these require two setpoints - and upper and a lower one.