Most new alarms have the ability to Ignore zones such as a shock sensor that constantly set the alarm off I think 3 falses is the magic number for DEI products. I think two way alarms are a great investment, not only do you know the status of your vehicle at all times but its an extra layer of protection that the factory alarm cant even come close to providing esp when it comes to range of the alarm. A good installer can always adjust a shock sensor to the owners specs. I have not come across a single (modern) shock sensor that was not adjustable.
I rather have a glass break sensor/shock sensor that would trigger the alarm than the factory alarm that would do nothing until a door was opened while being armed...
You arent putting alarm on top of alarm... can wire the factory alarm to work in conjunction with the aftermarket one through the factory disarm/arm wires, when aftermarket goes off factory goes off, when aftermarket disarms factory disarms..
A few comments:
- True...a two-way alarm can provide feedback on your car's status but remote range has absolutely NOTHING to do with
vehicle security. I've installed paging and two-way alarms. They're great at alerting you to false alarms caused by shock
sensors. LOL. One customer was arrested and sued for "assaulting" the kid whose baseball had hit his car and went
underneath it. The owner got an alert from his two-way alarm, ran down 4 flights of stairs, saw some kid under his car
and started stomping the kid's legs, feet, and breaking an ankle. He pulled the kid from underneath and...well the whole s
scenario ****ed. Poor kid was just trying to get his ball. But hey...the two-way alarm and shock sensor worked.
- Shock sensors and glass break detectors, when set properly, will still false. A car parked in a noisy area will sound its
alarm all day. Let a Harley or Dump Truck roll by and see what happens. Leave it parked at an airport and guess what? If
you don't disable the sensor, your car will false all the whole time...no matter how well-adjusted it is. These sensors are
actually why so many people ignore alarms. You refer to alarms ignoring sensors after 3 falses. What does that tell you
about the vulnerability of sensors to falsing? Sorry but why add a feature that causes the system to hit the snooze
button on its own sensor?
- If one must have sensors I would go with ultrasonics (not microwave), which CANNOT be set off by outside noises or
interference. Microwave is vulnerable to rouge RF signals. But ultrasonics are hard to find in the U.S.
- There's are reason no car made today--not even highly secure German vehicles--comes with a shock sensor factory-
installed...dealers would be inundated with false alarm claims.