How big does an earthquake generally need to be to set this thing off? We had a few earthquakes close to us but didn't even feel them.
82408
With the earthquake alarm is activated in my personal experience with 3.5 or more earthquakes.
82409
The more accurate answer should come from the manufacturer. They should have a toll-free number to call. I have felt a 4.5 here in St.Louis in '08 which did shake the house. So I am hoping that my setting will pick up at the 2.0 level before it gets to 4.0-4.5.
82410
It is important to adjust the sensitivity on the unit. I would turn the adjustment until it alarms and then back off about half turn. That way it is pretty sensitive.
82411
It has been a while since we had a fairly sizable magnitude. I would say it goes off when there is a magnitude of around 4 or more. I could be wrong...... but believe that is when it went off last . If you see LA has a certain magnitude, write me back, and I will tell you any time you want.
82412
You probably need to adjust the sensitivity. Mine goes off if there's an earthquake close, but also it depends on if the primary waves reach me. Check other Q&A;'s here on how to adjust it. If it's set right, it should give you a few seconds warning before you feel the earthquake.
82413
I have had mine now for about a year and we live in Southern California. The only time it went off was when it fell off the wall the first night I put it up. That will never happen again I used glue this time.
824136
Unfortunately since it is motion activated, anything will set it off. I forgot about it a few times and it blasted me with a shot of water! Lol!
599126
I haven't had that happen at all. The weight of the television seems to make it stay where it's put, but I do have a 50" TV on it. My wires don't put any noticable pressure to want to make it spin on it's own, either. I don't live in an earthquake zone either.
931475
Just stand on it. It seems to wake up if at least 25 pounds of pressure are present.
2249055
well, when it did decide to go off, it was VERY loud. It was very picky on what would set it off - we returned ours and I do not recommend it unless you have a clear line of sight and have it close to your house. Hope this answers your question
1861079
You feel it, but even the dogs dont yelp out when shocked. The children will touch it once, and only once, but wont be injured.
517811
if the wall collapses, as you say, a strong earthquake, pray much for you to be alive the next day. if you have detect earthquakes in north texas, would not know say that I live in the Caribbean.
1861221
I do not live in an earthquake zone, but can tell you that these mounts are very strong and sturdy. I had them holding up more than 20 lbs. with no issues. For me, if I did live in an earthquake zone and there was an earthquake, I would expect to be worried about other things than if my speakers were to have moved in the quake. Just sayin'. Overall, great mounts that I would buy again in a heartbeat.
1802761
Earthquakes start with a slight movement that human beings do not feel until it becomes acute. The detector records the slightest movement could be 10 seconds before the stronger.
1692580
I just tested my alarm. It's SUPER loud (loud enough you can hear it a block away.) I don't think you can hear it 2-acres away though.
1578503
Maybe you need a stronger shock? I shocked myself with the SDF-100 on the lowest setting and I weight 200 lb. It made my arm tingle for a few minutes afterward; it's no joke.
1930868
Yep. Made me a little nervous at first, too. But it works--just set it gently where you want it.
1575959
It could not withstand the force of our children . . . but then, they are far more determined than an earthquake. I think it would work for that application, even though it did not work for us.
1434811
It would probably be overkill. These are intended for heavy frames or areas that are earthquake prone.
1598899
i would disagree. i have mine on a sturdy table that the tv and stand sit on and 2 crazy dogs that run all over the place and have never caused it to even shake. however, i am sure an earthquake would damage more than a tv.
1802762
I can not answer yet. After installation i hVe not been home to witness performance evel. It is a pendulem that contacts an adjustable v shaped contact so I am sure it will work as described. The unique a.arm sound shuld verify an earthquake. If i were sleeping that may give my famly more time to get to safer places. We are in orange county area.
1466933
depending on how many kids you have and how aggressive they are with their bouncing you may not need anything. I know when we first set ours up outside we did not anchor it to the ground at all (although it is recommended) after a couple hours of bouncing we noticed it started to shift from the original position, but that was after the bigger kids got in on it, when it was just he littles (5 and under) they didn't seem to effect the position of the bounce house at all. If your kiddos are small and there are only a couple you could probably get away with no sandbags, if they are older, bigger and more aggressive then you will definitely need something to anchor it down. depending on how many kids you have and how aggressive they are with their bouncing you may not need anything. I know when we first set ours up outside we did not anchor it to the ground at all (although it is recommended) after a couple hours of bouncing we noticed it started to shift from the original position, but that was after the bigger kids got in on it, when it was just he littles (5 and under) they didn't seem to effect the position of the bounce house at all. If your kiddos are small and there are only a couple you could probably get away with no sandbags, if they are older,... » Read More depending on how many kids you have and how aggressive they are with their bouncing you may not need anything. I know when we first set ours up outside we did not anchor it to the ground at all (although it is recommended) after a couple hours of bouncing we noticed it started to shift from the original position, but that was after the bigger kids got in on it, when it was just he littles (5 and under) they didn't seem to effect the position of the bounce house at all. If your kiddos are small and there are only a couple you could probably get away with no sandbags, if they are older, bigger and more aggressive then you will definitely need something to anchor it down. « Show Less