Was bought early, the first model worked 1 min then set shorted for no reason. Exchange without problems from the Amzon. The new worked her time traveling from 9am, then same symptom that the first product (short circuit on the 12V supply). I try an RMA from Belkin, for amazon ensures returns to a limit of 30 days. In conclusion, the product looks serious at first, but seems rather fragile in its design, bad ...