I think many are already aware of Ravelco's general warnings if you don't buy from or through their "dealers" you have absolutely no factory support. I get that but given the whole nature of these devices I'd be switched paying an installer of unknown experience or previous installations upwards of $600 for such a simple device. Do know I fancy myself as fairly accomplished and able to install a Ravelco at least as well as most anyone else. That same level of confidence (arrogance?
) exists in others however!
The linked page is good to know but Ravelco understandably works hard discrediting devices they've not directly or originally profited from selling. Not sure how many have really found counterfeited devices, those I've seen are simply the "over stocked" being sold on the secondary market. Where they're sold isn't the problem, that they don't come Ravelco is their main objection.
These devices are so very simple in their design, the so-called "authentic" versions well made but IMHO hardly worth the asking price. Honestly one can achieve their same effect by removing one or two fuses from the Battery Junction Box (underhood fuse block) or the Central Junction Box (inside fuse block) although that's not an advisable method---those fuse blocks were not meant for repeated fuse removal and insertion.
Those I bought were indeed through eBay until Ravelco complained and they were all removed from listing. I was lucky having my sellers contact info so buying a few more was possible. At that time he did have maybe 10 more so I provided a link to contact him. Not sure how many here took advantage of that though.
So anyway Ravelco and its knock-offs or alternatives are great devices to thwart entire vehicle theft, IMHO FWIW!