Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Will passing trucks set this alarm off?
Document: It alarms everytime. Quakes that measure as low as 3.5 causes an alarm. Trucks or other large vehicles does not set it off. Alarm actually goes off before the large quake is felt.
While living in California, we used this detector In our home. It went off for minor earthquakes, and was triggered with the foreshocks of larger earthquakes. The further away the quake, the more advance notice we had. Because of the sensitivity control, we were able to set it so it did not trigger when heavy trucks drove by, but so that we got actual alerts.
You just turn a simple thumb screw to most sensitive and then start the other direction until it stops chiming all the time and you are set for only bigger quakes. Other detectors cannot be adjusted and this is a huge problem unless you want to be awakened all the time from all the tiny quakes. (some other claim - no adjustment needed! - terrible when they start making an alarm at every little quake (20 a day in Los Angeles!)2.
My wife was not too impressed but then again she's pretty used to my crazy experiments by now.I live near a rural two-lane highway and there are plenty of false alarms with big dairy trucks, usually just a beep or two as they cross the train tracks or hit a pot-hole.Another concern is sensitivity and remember I have had my Quake Alarms for a pretty long time. It seems to me that the sensitivity diminishes over time.
I have it adjusted now that with the occasional dinging, I can confirm quakes online - when (time), where (location) and magnitude, for more near active areas. At first I had it set too sensitive and I think maybe a little settling of the home caused dinging.I should attach one to the fridge and another to the microwave just to annoy the wife when she slams the doors.Note: I have two little doggies.
I purchased this item recently, and installed right next to my bed. Haven't been through a real situation with it yet, but the simplicity of the mechanism leaves no doubt that it will ring loudly whenever my wall starts to shake. I set it to a very sensitive position, so any little movement will be detected.In a final analysis, I don't know how many seconds I'll have to escape in a real situation, but this bet is to cheap for such a high prize.
A semi truck making daily early morning deliveries half a block away would routinely set the device off until i properly tuned the sensitivity. Leave it and forget once you find the right sweet spot.One very important thing to note is where to position the device. Find a solid exterior wall. Also, come up with your own mounting system, as the provided "mounting hardware" is a joke.
5-stars for an affordable shaky toy.Likes: Affordable, long battery life, works.Dislikes: The velcro issue, but I resolved the falling off the wall issue by leaving the battery cover off, then run a long but small/narrow screw through the small opening in the battery compartment that's slotted to the battery cover, then I just set the battery somewhat in the battery compartment without the battery cover.
This little gadget does what it claims because it gives about like five to thirty seconds of notice before the jolt hits and that, like in football, is a big advantage. When the latest one hit, it gave me a head start to grab my backpack filled with important documents and a few other things, and head out the door, when the jolt set in, I was a few yards away in the clear street. When the big one strikes, I'll be ready. Best thirty bucks I've ever spent.
Thanks god I haven't tested the alarm with a real earthquake threat but it works fine and sounds as expected
Answer: yes