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CHADWICK 12V Vibration Sensor Car Alarm with Siren, M810-8115

Based on 33 reviews
Condition: New
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$32.99
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Availability: 12 left in stock
Fulfilled by Amazon

Arrives Sunday, Nov 1
Order within 2 hours and 28 minutes

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At a glance

Condition
New
Size
CW-8115
Model
M810-8115
Noise Level
120 db
Built-In Media
Car Horn Siren Alarm
Warranty
If you have any questions, please feel free to ask.
Works with
DC12V cars with electric, pneumatic, or retrofitted central locking systems

Features 5

  • 7-LEVEL SENSITIVITY adjust the vibration response from low to high to suit the parking environment and reduce unnecessary alerts
  • SIREN WARNING after arming, detected vibration activates an audible warning sequence to help draw attention to the vehicle
  • REMOTE OPERATION use the included controls to arm or disarm the system and activate the vehicle-search alarm when needed
  • 12V WIRED SYSTEM designed for compatible DC 12V vehicles; professional automotive electrical installation is recommended

Description

Sensitivity: Level 1-7, the lowest level 1, the highest level 7 Sound: About 120 decibels Distance: about 30-80 meters between the remote control and the host Sound quality: slight collision, simply alarm, gravity collision cycle alarm stop within 2 minutes Consumption: 20W power, non-continuous alarm, low energy consumption

Specs 9

Brand CHADWICK
Noise Level 120 db
Item Highlight Seven-level sensitivity helps balance detection and false alerts; two remotes make daily operation convenient
Manufacturer CHADWICK
Number of Items 1
Built-In Media Car Horn Siren Alarm
Model Number M810-8115
Mfr Part Number M810-8115

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


This a great, easy to install, high quality functional car alarm
Size: CW-8110
This a great, easy to install, high quality functional car alarm, that is well worth the price in terms of the peace of mind it provides. I highly recommend it!
Reviewed in the United States on June 5, 2026 by orbtax

Great product.
Size: CW-8115
Easy to install and still works great after a few years since I bought it. Great quality and value for money and no wiring, and provided security. Thanks again.
Reviewed in the United States on January 25, 2026 by deangelo1989

15 min Easy Install M810
Size: CW-8131
This is a Good product for a Good price. I had to do online research outside of amazon to understand the difference in models and features. I selected model M810 which is labeled non-destructive installation. It was as simple as attaching 2 wires. The operating instructions seemed lengthy to read but turned out to be very simple to understand. Please note this model is only vibration / motion that triggers the alarm. The remote is also easy to use and has Good Range. Short 1 star as im still trying to find the perfect sensitivity level. A low flying airlplane triggered the alarm so i lowered the sensitivity 1 setting. Thereafter i kinda medium slam the vehicle door and the alarm Didnot go off. Re adjusted to factory settings #4. Alarm triggers at the slightest bit of vibration but altleast it work. This device was installed as a deterrent in my work van. One may have different results with a car. However, Im still satisfied with this device. 👍 ... show more
Reviewed in the United States on May 19, 2025 by William Davis ll

Easy to Install. Likes to go off for no Reason. Set at a Lower Alarm Setting of 2 or 3.
Size: CW-8182
Easy to Install. Likes to go off for no Reason. Set at a Lower Alarm Setting of 2 or 3. Has a decent alarm sound.. Nice Remote Need to be carefull in Pocket / hanging with other keys will set it off. Good distance to find vehicle in parking lot.
Reviewed in the United States on September 30, 2025 by Flora O

Easy to install - a piece of mind.
Size: CW-8101
I'm unsure --- Definitely a deterred from car thieves or someone who breaks into or messed with your car. A roommate that I don't particularly trust sighs when he heard the alarm. When did you get that?? He asked. Uh huh. The culprit is do believe is disgruntled. Lol. [ It took less than 5 minutes to install fairly basic ] my only concern was draining the battery?? I'll update later if that is an issue. In the meantime --- hahaha. I hope to catch this prick! Thank you. ... show more
Reviewed in the United States on June 14, 2026 by Robert Aiassa

Great but Not!
Size: CW-8110
I am a certified installer and have installed many alarms over the years to Clifford, Crime Stopper, Kenwood, Viper Electronics and DEI. I know DC schematics and car audio very well. I can safely say this system "A" is purely awful. The pros are that is has great remote range, and super easy to install, 2 wires, and it's well made meaning not cheap feeling or material is used. That's about it, all else as in usage and or performance is awful. On every setting for sensitivity, 7-3 the system just goes off every few minutes for absolutely NO reason. I can't tell if it's interference from something around or it's just defective. The system is not sensitive like people are reporting, what is occurring is that it's picking up every frequency around that appears to trigger the alarm falsely. To test this, when I put the sensitivity to 2 or 1 it's stops going off but the issue is that I can jump and kick the car like a criminal and the alarm will NOT go off. Even on 3 it's on the edge of not going off automatically randomly but the protection is non existent. Going with a different system. Won't return it but lesson learned, buy a reputable name and or a product with many more positive reviews. ... show more
Reviewed in the United States on August 22, 2022 by Hi-Fie'r

Worth the purchase!
Size: CW-8110
Super easy install which took less than 20 minutes!
Reviewed in the United States on July 11, 2026 by Elliot Gottlieb

Really good alarm for the money
Size: CW-8131
I am very impressed, easy to install. 2 wires to the battery. You just have to find a good place to mount it. It needs to be mounted to metal to pick up vibration. The default setting was not sensitive enough for me. I set it to 5, opened the door, it did not go off, closed the door it did. I set it to 6, opened the door it went off. I have been vandalized twice since I lived at this apartment. First stole the Honda catalitc converter. Second broke my window. I leave my car unlocked now, let open the door, surprise. AIlive ina second story apartment that has a balcony that overlooks the parking lot. A few months ago the alarm went off, it was kid had my door open looking for something to steal, I yelled at him, he took off running. I bought this August 2024, today is December 16 2025, it still works fine. If you don't have a bunch of money spend, I highly recommend it. ... show more
Reviewed in the United States on December 16, 2025 by D. Smith
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