Best Priced Interlock Device on the Market!! New Monthly Rental Rates and Promotions! No Hidden Fees, No Set Up Fees, No Calibration Fees and No Rebates Needed. Easy to Use – Straight Blow! No Suck Back or Humming Required During Test in AZ & CA

See what our customers say about Instant Interlock
Customer Service

View Testimonials

Here are answers to the most commonly asked questions about Interlock Devices and how an Interlock Device works.

Find the nearest location to install your Instant Interlock Device.


I'm writing this email to let you know what an excellent job xxxxxx
in your main office did in handling an issue my partner and I had
with our interlock system. 
xxxxxx took my calls and assisted me through the process. 
Thank you! Cheers, 

Find an Instant Interlock installation location

Certified Ignition Interlock Device in: 
Arizona, California, Texas, Oregon & New Mexico