CHADWICK Car Horn Siren Alarm,Universal Car Alarm Security Protection System with 2 Remote Controls,7-Level Sensitivity,12v,Anti-Theft Device,No Thread Trimmin,Non-Destructive Installation (CW-8131)

Si funciona la alarma ala perfección solo lapuse a sensibilidad 6 o 5 y si un golpe o ruido de una ambulancia y si se activa muy muy bien selas recomiendo solo nose como canbiar la batería del control cundo se termine pero será fácil

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. 👍

Esta muy bueno y recomendable

This product cannot be an alarm system. It gives false alarms all the time. Even with changing the antenna location and reducing the sensor sensitivity to level 4, it still gives false alarms. Unfortunately, I was very optimistic about it, but after this, I became very frustrated.

the last five items i have bought was great everything fit everything worked no returns.

The only time the alarm goes off is when the car actually moves.. logic tells me that too late.

Was looking for a Simple Car Alarm to install on my Jeep CJ7. It doesn't have doors... Didn't want ignition locks, flashing lights, etc.. Also wanted an Alarm with more of that Old School Vibration sensor vs Shock Sensor.. This Alarm meant all of my wants. Cheap and really easy to install. Siren is Loud. Sensitivity is about right. I don't get any false Alarms but it will get set off if you open my hood.Good Value

I did not want to destroy my car wiring system. All I wanted is to deter kids and robbers. The engineer of this simple yet powerful alarm is a genius. ... One star down for the very thin wires. I had to wrap with electrical tape. Please make a version 2.0 with thicker wires.