Need an ignition interlock device near Delta? Intoxalock is available at Western Slope Interlock, a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.Colorado Western Slope Interlock is a resource for the treatment of alcohol and drug abuse. In addition to counseling, education and treatment, they also install ignition interlock devices that meet CO requirements. They have been an authorized ignition interlock installer for Intoxalock since 2015.