General Info

Get back on the road confidently with Intoxalock, the trusted Ignition Interlock Device (IID) provider of Signal-Hill, California and the no. 1 interlock device brand in the U.S.. Located in the Signal Hill neighborhood at 2947 Obispo Avenue, we offer fast and affordable court-approved IID installation, calibration, and removal services. Our certified technicians ensure a smooth, stress-free experience while helping you stay compliant with California interlock laws. With 24/7 customer support, Intoxalock makes the process easy for drivers to regain their licenses after a DUI. Visit us in CA near you or call our state specialists to schedule your car breathalyzer installation and get back on the road safely!