Need an ignition interlock device near Dorchester? Intoxalock is available at CarLetro, a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.CarLetro Music is one of our local Intoxalock certified service centers with convenient hours, prices and services near you. As a certified Intoxalock provider, you can count on reliable, quality service. They offer quick and easy ignition interlock services, installation and deinstallation for your convenience. Call to schedule an appointment to get your device installed, hassle free. They also have all of your audio and detailing automotive needs. At their location on 5 Crescent Street in Charlestown, MA. Stop in at CarLetro Music for any of your audio, detailing, or ignition interlock needs!