| You can get some 2 way alarms either way. Viper makes the Responder 350, 2 way security system Clifford makes the 330.3x, 320.3x, 3305X (1X) There are alot of options, it just depends on what your preferences are. Yeah, DEI markets alot of alarm devices for automobiles, that is the company I stick with. Some of the above use a built in shock sensor, if not they will come with an external shock sensor. The other sensors (tilt, proximity, glass break, etc) are external modules you would have to purchase separately. Do you have the ability to install it on your own?
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