I'm a certified installer,and I already installed this alarm is the same in every feature with Viper 550 and Phyton 1500 the only different is the antenna this one has 4 wire and the other one has only 3 so if you need to upgrade from those alarm similar to this one what you have to do is swap wire harnees to the new brain and run the new antenna also this alarm have a good range and only come with one remote.
An extra remote cost $90.
Also if someone need this alarm or any other alarm and wanna save some money just email me or you can call me I'll do it cheap alarm + installation.
Virginia,Maryland and DC only.
240-472-9026
[email protected]
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