Some got into my garage last night, and DESTROYED the interior of my car, while trying to steal my $75 stereo. I'm thinking of getting a motion sensing alarm. Does anyone know how loud 120db is? Loud enough for neighbors to hear and scare the @$$holes away from my garage? This is in addition to installing lock and such, which it currently doesn't have.

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1989 300E 144K

This may help as far as the db comparison

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

Someone trashed my Cabrio last week over a 10 year old Pioneer deck and drilled two holes in my gas tank and got... 1/2 a gallon of fuel. I feel your pain. My car was outside though because I'm dumb. I've since padlocked my garage door shut.

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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

Friend of mine put a motion sensor on his boat lift, wired to the house. No alarm outside, just a warning light and a quiet buzzer near his bed so he could call the cops and the thieves wouldnt know they'd been seen.

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95 E300D working out the kinks
77 300D, 227k, station car
83 300CD 370k, gone away
89 190E 2.6- 335k, no more
79 VW FI Bus- 145k miles, summer driver
59 VW Beetle ragtop- 175k miles
12 VW Jetta- 160k miles

How did they get in? You need to fix the access points first. If their are windows plant roses or something else thorny in front of them, etc.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Yep. I'm fixing all access points. If they get thorough that (they will need to be quite agressive), a very loud alarm will be sounding.

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1989 300E 144K

You just need to make your garage harder to get into than your neighbors. Criminals are lazy, they look for easy targets.

Motion sensor spotlights work well.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Common Hawthorne.... You will be able to track the invader by their blood trail...

120db is pretty loud. Louder than a rock concert. But.... what frequency/ies does the 120db exist in?

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On some nights I still believe that a car with the fuel gauge on empty can run about fifty more miles if you have the right music very loud on the radio. - HST

1983 300SD - 305000
1984 Toyota Landcruiser - 190000
1994 GMC Jimmy - 203000

https://media.giphy.com/media/X3nnss8PAj5aU/giphy.gif

120 dB is very loud. Put a siren inside and outside. They won't be able to stand it.

These guys are good:
homesecuritystore.com

Good phone support if you have questions. Good prices. I had motion in my garage but had issues with bugs setting it off. Yeah, a spider can crawl in and set it off believe it or not. So I would seal it real good with RTV. The main issue with motion sensors is false alarms. Your neighbors will ignore it anyway. But it will scare the person away probably.

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra

That level of 125db is right around the sound of a .38 S&W going off near you.

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Strelnik
Invest in America: Buy a Congressman!

1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6

I wouldn't use an alarm, I'd use a 230gr .45acp Speer Golddot.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

I thought of that, but I enjoy sleeping...

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1989 300E 144K

place motion sensor lights above the garage door. also, remove the emergency rope pull off the garage door opener, it make it easy for thieves to get in. might consider installing a video camera with night vision abilities wired to a DVR.

A really big ugly dog sleeping in the doghouse near the entry point of inside works for me

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86 300SDL. 250,xxx on #14 Head. One eye always on temp gauge.. Cruising towards 300K

To quote a country song:

"Our houses are protected by the good Lord and a gun
And you might meet 'em both if you show up here not welcome son"

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra