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Crimestopper SP-402 Car Alarm Review

Kenn Muguna Profile image

Written by:

Updated June 27, 2022
91 Expert Rating

As its name might suggest, the Crime stopper car alarm is one that’ll make sure that no thief ever gets close enough to your car to steal it. The alarm system sounds a 20W high power mini single tone siren, and allows for keyless entry which is great because you’ll get to lock and unlock your car before you reach for the door handle. To prevent the security system from sounding the alarm out of very small disturbances, the dual stage shock sensor’s sensitivity level can be re-adjusted to only trip the alarm whenever there’s slightly more impact detected. With these kinds of features, there’s a high chance that the Crime stopper car alarm could be the best car alarm around. Go ahead with the rest of this review to find out what else it has to offer.

Why We Like It – Crimestopper SP-402 Car Alarm

The Crimestopper SP-402 is an all round car alarm system that comes with a starter kill output to prevent the car from cranking, as well as audible & visual arm disarm with intrusion alert.

  • Dual Shock zone sensor
  • Allows for remote start keyless entry
  • Can be switched to 2-way system
  • Occasional remote problems


The Crimestopper SP-402 car alarm system comes with a remote start feature that allows the owner to start up the car at a 2300 ft range, which is a lot more than the 1500 ft range that the viper 350 plus 3105v 1-way car alarm is capable of. The remote start keyless entry feature can be useful especially if you live in cold environments where the engine might give you problems if you don’t warm it up before driving. The car system also comes with 4 remote auxiliary outputs, and two data ports to accommodate different modules.


The two button transmitters that you get with the Crimestopper car alarm feature a brushed aluminium trim and a titanium silver button finish that makes them look more exquisite and elegant than those of the avital 3100LX car alarm. The keys both have 5 functions, and they include locking, unlocking, trunk release, start/stop and multi vehicle operation.


The Crimestopper car alarm comes equipped with 5 on-board relays for both remote start keyless entry, and despite being a one way system, it can still be configured to support two way data transfer between the vehicle and the transmitter. This car alarm keyless entry system can also be configured to control two cars, and with a dual shock sensor, its less likely to sound its siren for a false alarm. If you want an alarm that also includes the ability to track your car, then you should consider the carlock 2nd gen advanced real time 3g car tracker.

Crimestopper SP-402 Car Alarm Wrap Up

Made in the United States, the Crimestopper alarm keyless entry car tracker gives you visual arm and disarm feedback, comes with the starter kill feature, and like other remote start systems of around the same cost, it can be delivered with free shipping if you purchase it along with a couple more items.