Ok, so first of all using Sensor Factory Sensors has really improved our remote monitoring allowing us to only notify when all sensors are down. This has reduced 'alert fatigue' from false positives related to external network problems.
I've read that the Sensor Factory is unable to calculate downtime... This is too bad, as it seems like everyone wants this. Any explanation why downtime won't work?
Also, is there any way to send the sensor into Warning when 1 or more (but not all) sensors report down? This would be very useful in notifying us that something is wrong, but not with our environment. Information the Support Departments could use when we get reports that users in some area are having trouble connecting.