Sentinel Safety

Smart Start is the #1 Ignition Interlock Device provider in Houston with same-day installation available for your vehicle. We’re a convenient and affordable Texas IID supplier located in Downtown Houston at 1112 Wood St with mobile services and price matching available to give you the best value. Our reliable customer service experts and licensed technicians will make your IID device experience quick & low stress. Smart Start is ready to schedule your Ignition Interlock Device installation in Houston. Call our Downtown Houston location & talk to a Program Advisor, who will help you schedule an appointment for your IID installation, calibration or removal.

LifeSafer Ignition interlock is the leading ignition interlock provider nationwide and home to “No-Call Install”, the first fully online installation booking tool. LifeSafer’s locations are TX certified and our expert technicians at 609 Houston Ave can handle all your installation and calibration needs. LifeSafer has over 30 years of ignition interlock experience and has helped over 1.5 million people get back on the road again.

Fast. Easy. Discreet. RoadGuard Interlock gets you back on the road with a car breathalyzer that is FAST to warm up, EASY to use, and DISCREET so you can focus on the road ahead. As an approved Texas Ignition Interlock provider, we have convenient ignition interlock installation near you in Houston, Texas at 2323 Blodgett St. With a proven track record, RoadGuard Interlock offers top-tier ignition interlock devices that won't damage your vehicle, professional installation, and reliable customer service. Call us today to schedule an appointment for your car breathalyzer installation, calibration, or removal in Houston or any of our other convenient locations throughout the state of Texas.