Which sensor does it indicate is triggering it? The Honda alarm doesn't have an impact or shock sensor, just the glass breakage sensor which shouldn't false alarm like a shock sensor would. I don't see any adjustment on the alarm for the sensor.
It may be an aftermarket alarm as a lot of dealers contract with outside companies to install alarms for them.
I didn't catch that it was an RTL, sorry, those come from the factory with an alarm. A lot of dealers add aftermarket alarms to those still (my Sisters Odyssey has an add-on that her dealer added on top of the factory one).
I'm not familiar with the features of the stock ridgeline alarm, however so far I haven't encountered a factory alarm from Honda that had any triggers other than doors getting opened. They haven't even put the glass break sensor in their ones on Accords and Odysseys.