Looking on the internet deeply has found these results:

triggered by is the most popular phrase on the web.

triggered from 1413,000 results on the web	triggered by 118,800,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
They can be triggered from the server room. The panic alarm was triggered from inside? Somehow explosions was triggered from that vehicle. Odds are, the device will be triggered from their network of weapons labs. The alarm was triggered from the inside. It appears to be a false alarm, triggered from the medical bay. Such an alarm shall be triggered from within the vehicle and shall not affect the state (set or unset) of the VAS. And, given the proximity of Paul's body to the second device, that explosion was triggered from the same distance.	Inflation was mainly triggered by externally induced increases of food and energy prices. I mean, maybe it's triggered by the changing sunlight or something, like an extreme case of seasonal affective disorder. Celiac can be triggered by all kinds of stress. And it can be triggered by a number of things. His psychotic break was triggered by a particularly traumatic event. Perhaps the extinction was triggered by advanced E.T.'s. Or, to be slightly more optimistic, late onset asthma triggered by an unknown allergen.

triggered from

1413,000 results on the web

triggered by

118,800,000 results on the web

More popular!

They can be triggered from the server room.
The panic alarm was triggered from inside?
Somehow explosions was triggered from that vehicle.
Odds are, the device will be triggered from their network of weapons labs.
The alarm was triggered from the inside.
It appears to be a false alarm, triggered from the medical bay.
Such an alarm shall be triggered from within the vehicle and shall not affect the state (set or unset) of the VAS.
And, given the proximity of Paul's body to the second device, that explosion was triggered from the same distance.

Inflation was mainly triggered by externally induced increases of food and energy prices.
I mean, maybe it's triggered by the changing sunlight or something, like an extreme case of seasonal affective disorder.
Celiac can be triggered by all kinds of stress.
And it can be triggered by a number of things.
His psychotic break was triggered by a particularly traumatic event.
Perhaps the extinction was triggered by advanced E.T.'s.
Or, to be slightly more optimistic, late
onset asthma triggered by an unknown allergen.