How can I disable " Device Down: No response from device for last 5 polls" 

I need devices to be monitored, but I do not need information, if they are offline, for example desktop,printer during night. 

Notification profiles, makes no difference what I setup there, alarms escalation this same, removing network interfaces from monitored this same result. I need to see device green and get alarms when free space on disk is low, or network utilization is high and so on, but information about  if device is connected or not is no important.