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INM MTL SUM5 Rev 7
DRAFT - 09 June 2021 DRAFT - 09 June 2021
21.2 Inhibiting Common Relays During Sleep Mode
In the above example HNA and HNB horn relays will not operate during sleep mode.
21.3 Sleep Mode Heartbeat
To indicate that the annunciator is in sleep mode the associated alarm LED’s pulse periodically
(heart beat pulse).
In some applications this pulse may not be required and it can be disabled by selecting “Sleep
Without Indication” under the “General” tab as shown in the below screenshot. Once the setting
has been made select “Conrm” – “Tools” menu – “Send Settings” to download the changes to
the SmartAlarm.