Negative Positive
Title: works, but unreliable
Review: Had my alarm installer put one in my Viper system. Worked well for about 1 year, then, of course, with the warranty done, the siren malfunctioned (see previous reviews of people with this problem also). Thankfully it was inexpensive, so I purchased another, and will keep my fingers crossed. The horn is quite a bit louder than the stock horn that comes with the alarm itself, so I am giving it another chance... so far, not impressed with DEI electronics, as I have a window module that may be faulty as well...
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