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We Will Beat Any Price, Guaranteed! Discreet, Easy To Use Interlock Device. No Humming. 24/7 Support. 

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We Are Currently Offering Free Ignition Interlock Installation & Set-Up. We Will Beat Any Price, Guaranteed. 

Same Day Installation As Well As Evening & Weekend Appointments Available! Fill Out The Form & We Will Get Back To You Promptly!

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New Device Installation Application

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Why do people choose Nationwide Interlock over other ignition interlock providers?

Nationwide has more five-star Google reviews than any other ignition interlock provider!


Our Devices

Most reliable devices on the market. Plus, NO HUMMING!

Read About Our Devices

Nationwide Interlock

A Roadguard Ignition Interlock Device Service Provider

Several states and municipalities require an ignition interlock device to be installed after a drunk driving arrest. An ignition interlock device is the most commonly used technology to prevent drunk driving. The general public may not be familiar with an ignition interlock device, although these car breathalyzers are more common than you may think. A nationwide interlock customer service representative is ready to answer your questions and walk you through the process step by step.

Get started today by filling out our short installation and quote request form or simply give us a call.

Find an Ignition Interlock Device Installation Facility

A Roadguard Interlock Device Service Provider


Enter your city and state, or your zip code for the closest facility.

Your Road to a Safer Tomorrow Begins Here!

Superior Ignition Interlock Devices

Nationwide offers the Roadguard ignition interlock device. An easy breath pattern and one of the most reliable devices on the market.

Meets All State Requirements

Nationwide Interlock devices meet all state requirements. Our state representative will assist you in finding the correct IID/car breathalyzer that is required by your state.

Best Priced Ignition Interlock

Nationwide Interlock offers a best price guarantee.

Most Convenient Locations

A large network of state certified BAIID service centers and referral partners within a few miles of your location.

Call Now! (866) 694-6099

New Installations & Questions

Why People Choose Nationwide Interlock

When you contact Nationwide Interlock for a car breathalyzer you will get a knowledgeable state representative who is there to assist you. You will speak to a live representative who understands the requirements needed for your IID/car breathalyzer. You can expect a judgment-free experience. Nationwide interlock understands the importance of treating all customers with the utmost respect.

Call Now: (866) 694-6099

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Real Reviews Written By Real Customers

We set ourselves apart by providing excellent service with a commitment to customer satisfaction.

Yellow Pages (5.0 Stars)

Google Reviews (4.8 Stars)

Over 900+ Reviews

Nationwide Interlock is a Roadguard Interlock Device Service Provider.

Call Now: (866) 694-6099

New Installations & Questions