> For the complete documentation index, see [llms.txt](https://docs.g-iot.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.g-iot.io/level-meter-full-device-guide-book/level-meter-greater-than-giots-function/lm-rules/lm-multiple-threshold-rule.md).

# LM -Multiple Threshold Rule

The Threshold Rule allows users to define critical and minor alarm levels based on specific device parameters. This rule ensures that alarms are triggered when readings exceed or fall below user-defined thresholds. The Critical Alarm Threshold is activated by setting minimum and maximum values, ensuring immediate attention when critical conditions arise. Additionally, an optional Yellow (Minor) Alarm Threshold can be configured as a secondary alert level, providing an early warning before reaching the critical stage. Users can choose to receive email notifications (up to 5 recipients) or simply log the alarm in the platform.

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXehSm348pYlg75WzowDdstdwKIb35wzle0Kh496migeOBASXFDm8cMRW6O7s6Ef7aRZAlrDimv_B6d4Vy6lX97L0hAUQI88tQ0hR7RwSyyJ85HR-zJuF0uYCzoG8zMY1OplYKlli9OoHhgpatAL_A?key=qseJiEdvy-u-BEtC1zKJXIwk" alt="" width="375"><figcaption><p>Multiple Threshold Rule LM</p></figcaption></figure>

#### Steps to Set Up the Multiple Threshold Rule for LM:

1. Go to Device:\
   Navigate to the device list, locate the desired LM device, and open its dashboard.
2. Access Rules Section:\
   Open the Rules section of the device dashboard, click on the + icon, and select the Multiple Threshold.
3. Activate Rule:\
   Toggle the switch to activate the rule.
4. Select the parameter:\
   from the drop down list select the parameter that will activate the rule.
5. Insert MIN and MAX Read level:\
   Insert the numerical value with in the Critical Alarm will be triggered.
6. Activate the Yellow level,as second Threshold:\
   Toggle the switch to activate it and insert the values.
7. Define MIN and MAX Level for the Yellow Threshold:\
   Insert the numerical value with-in the Minor Alarm will be triggered.
8. Notification:\
   None or email. if email is selected specify the email addresses, up to 5.
9. Save.


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