Review written by gap84 from Katherine, NT, Australia

Had this installed and enjoy using it everyday. Sonic Electronix.com were excellent in their service and the delivery of the item to Australia was super quick. Thanks guys.

Review written by JJ from Akron, Ohio

This is a wonderful product. one of the best out. I did a lot of due diligence on car alarms and starters. You can't lose with this product.

Review written by phil from Concord, NC

I have had many Vipers and other various alarms systems and this is by far the best one i have ever had. The rechargeable battery last up to a month and beyond and I use all the functions on mine a lot. I have also installed many RS security systems(viper 791xv included) and have never had any problems till this one. This is a complex system but works amazingly. I don't know how they measure the range on these things but I definitely cannot get a mile out of mine granted it is not a salt flat where I live so i don't expect 100% of what they say. But over all this is the best alarm i have ever seen or had.

Review written by mike from riverside, Ca

great alarm. got it for my 03' s-10 and its been awesome. the manual is a little confusing took me forever to figure out how to use it but its great. would be better with all the features, but great price. remote face is easy to scratch soo be careful. would recommend this alarm to anyone..

Review written by Tarantula1 from Urbancrest, OH

I love this alarm. the remote is great even the additional remote is not bad my girl knows how to work both with no problem! lol
i love the display and the range on it and the fact it lets you know if you alarm is going off even if you can't hear your car/truck calling for help! lol
the remote beeps and vibrates to let you know even for the warn away shock! this is a great buy!

Review written by fidi from las vegas, nv

you get the best when you buy the best, and this viper 5901 its top of the line. thank you sonic e my favorite on line store

Review written by D from Lakewood, CO

I have had this installed in my truck for about 6 months now. Great product but plan on having a licensed installer do the install. The parent company will not help you with any questions. Lucky for me I have installed there equipment in the past and had a copy of my vehicle schematics already. Just had to buy an ignition over ride, had an installer program it and I was off and running. Again, great product, just be prepared for the extra $200-$300 install fee on top of your purchase price.

Review written by Randy from Naperville, IL

Great value... I recommend this product to everyone I meet. I installed it myself in under 3hrs. Do your homework before considering installing it yourself.

Review written by Riptide from Providence

Possibly the best of Viper's lineup this season. No Batteries for the 2 way keyfob and now is rechargable making life much easier for the end user. Distance is great and the response is even better. Still up in the air about the intergrated shock sensor, but so far no issues (If you are that worried about it, buy and install a seperate 2 zone shock sensor). Great unit from DEI!!

Review written by Ronald from Carol Stream, IL

Great product, this is by far the best remote starter/alarm system available. Awesome pricing and service from Sonic electronix, could not be happier, will come again!!! Thanks!!!

Review written by J from Ohio

I have installed this product at my place of work and it is great! the older model would just show you a door was opened... this will even show you which door (drivers front or passenger rear etc..) it has a digital temperature reading at the bottom of the display on the remote and the 1 mile range is super if you live in an apartment complex, or have to park a long way from work. the alarm offers all of vipers convenience features which basically make your car a rolling fortress.