The OnDeck™ alarm notifications feature is supplemental and should not be relied upon as a primary method to monitor your vessel. The functionality, reliability, and timeliness of the alarm notifications depend on a number of factors that are beyond Garmin®'s control, including but not limited to cellular connectivity/reception and device power.
You will be notified of alarms using the email and text numbers entered (Adding Contacts).
By default, you receive notifications when alarm states are triggered and cleared, and those values can be configured for each sensor (Alarm Notification Details).
You can snooze or silence alarms for the entire system or you can snooze alarms for individual sensors (Snoozing and Silencing Alarms).