Smart Start Ignition Interlock

TNT AUDIO
98 W Main St
Kerrville, TX 78028

#1 Ignition Interlock from $1.99/day*. Same-day installation available

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Hours of Operation:

Day	1st Hour Block	2nd Hour Block
Sun	Closed
Mon	9:30am - 5:30pm
Tue	9:30am - 5:30pm
Wed	9:30am - 5:30pm
Thu	9:30am - 5:30pm
Fri	9:30am - 5:30pm
Sat	Closed

Services at this Location:

Installations
Calibrations

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With the thousands of locations across the nation, 24/7 customer support, no hidden fees and the most reliable device on the market, Smart Start Ignition Interlock devices are hands-down the best way to get you back on the road fast.

Get a quick and easy IID installation with Smart Start! Get started today!

¡Obtenga una instalación rápida y fácil de IID con Smart Start! ¡Empieza hoy mismo!

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Or Call (830) 454-3655 Now!

¡O llame ahora al (830) 454-3655!

Why Choose Smart Start Ignition Interlock?

From $1.99/Day* - No Long-Term Contracts

Bi-weekly payment options designed to fit your budget.

IGNITION INTERLOCK COSTS

3,000+ Locations - Same Day Install

Quick installs by skilled technicians at convenient U.S. locations.

FIND A LOCATION

Discreet, Easy-to-Use Devices

Reliable, hygienic devices with guided tests and easy English-Spanish switching.

SMART START DEVICES

24/7 Knowledgeable State Program Experts

Multilingual support trusted by over 1 million people, ready when you need us.

TALK TO A PROGRAM ADVISOR

#1 Ignition Interlock Device Provider at TNT AUDIO in Kerrville

Name: TNT AUDIO
Address: 98 W Main St, Kerrville, TX, 78028, US
Telephone: (830) 454-3655
Rating: 5

Looking for an Ignition Interlock Device? Look no further than Smart Start for quality, affordability and speedy testing. The qualified and licensed service technicians that install your Ignition Interlock Device will provide you with hands-on training to ensure quick and accurate test results. For any questions or concerns you may have, our outstanding Customer Care Center is accessible 24/7/365 to help, even on weekends and holidays.

Smart Start Kerrville offers their Ignition Interlock services at TNT Audio, located on West Main Street across from Gibson’s Discount Center. We look forward to serving you!

Call (830) 454-3655 or fill out our online form to schedule your installation appointment today. Look for other convenient Smart Start locations in Kerrville, Bandera, Boerne, Fredericksburg, or throughout Texas.

Frequently Asked Questions

The overall cost of an Ignition Interlock Device is a combination of installation fees, monthly service fees, and removal fees. Exact pricing varies by state. To get a quote today, call (800) 831-3299 to speak with a friendly Program Advisor.

Texas mandate dictates that you will need to service your Ignition Interlock Device (IID) once every 30-67 days as determined by your jurisdiction.

Once you have scheduled your Ignition Interlock Device (IID) installation with Smart Start, you will need to bring the following to your IID installation appointment:

Two forms of photo identification
Any and all court paperwork that has been given to you
Proof of residence
Car insurance and vehicle registration

If the vehicle is not yours, you will need to provide a letter of permission from the owner of the vehicle stating that you are allowed to install an Ignition Interlock Device.

In Texas, you can pay for your Interlock Device calibration via credit card at the Smart Start service center at the time of calibration or via the online Client Portal.

In Texas, any and all of the following may constitute a violation:

Testing at or above the fail level of .030
Skipping or failing a rolling re-test
Missing your scheduled IID service appointment

Learn more about Interlock Device violations.

Texas state law dictates that you can service your Ignition Interlock Device at any Smart Start service center nationwide unless informed otherwise by your State authority. Find the nearest Smart Start service center here.

Nearby Locations

Danford Law Firm

813 Barnett St
Kerrville, TX 78028

CLOSED – Opens at 8:00am We

Services at this Location:

(833) 408-3199 More Details

Dr. Solarize Tint

157 Hwy 16 S
Bandera, TX 78003

Services at this Location:

(830) 850-4134 More Details

Hill Country Flowers

19750 hwy 46
Spring Branch, TX 78070

CLOSED – Opens at 10:00am We

Services at this Location:

(682) 502-1012 More Details

See What Everyone Says About Our Ignition Interlock

Excellent TrustScore Rating

December 16, 2025

"The operator was helpful with the questions I had and seemed happy to assist me. I had a good experience with getting my appointment scheduled. "

Janet H.

United States

December 16, 2025

"Very helpful and friendly thank you for making the process so smooth!!"

Jason A.

United States

December 16, 2025

"Great customer service, very helpful and knowledgeable. Thanks for your help"

Deoz J.

United States

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Find a location near you!

Smart Start Ignition Interlock

Hours of Operation:

Services at this Location:

Book an Installation

Fast-Track Your Installation

Want to speed up the installation appointment process?
We can get you a quote faster if you fill out the information below.

Or Call (830) 454-3655 Now!

¡O llame ahora al (830) 454-3655!

From $1.99/Day* - No Long-Term Contracts

3,000+ Locations - Same Day Install

Discreet, Easy-to-Use Devices

24/7 Knowledgeable State Program Experts

#1 Ignition Interlock Device Provider at TNT AUDIO in Kerrville

Frequently Asked Questions

Nearby Locations

Danford Law Firm

Services at this Location:

Dr. Solarize Tint

Services at this Location:

Hill Country Flowers

Services at this Location:

Get Started

Locations

Support

Partners

Contact Us

Find a location near you!

Smart Start Ignition Interlock

Hours of Operation:

Services at this Location:

Book an Installation

Fast-Track Your Installation

Want to speed up the installation appointment process?We can get you a quote faster if you fill out the information below.

Or Call (830) 454-3655 Now!

¡O llame ahora al (830) 454-3655!

Why Choose Smart Start Ignition Interlock?

From $1.99/Day* - No Long-Term Contracts

3,000+ Locations - Same Day Install

Discreet, Easy-to-Use Devices

24/7 Knowledgeable State Program Experts

#1 Ignition Interlock Device Provider at TNT AUDIO in Kerrville

Frequently Asked Questions

How much does an Ignition Interlock Device cost in Texas? What are the fees?

How often does my IID need to be serviced in Texas?

What do I need to bring to my installation in Kerrville?

How can I pay for calibration?

What constitutes a violation in Texas?

Where can I go for service? Anywhere, or just within my state?

Nearby Locations

Danford Law Firm

Services at this Location:

Dr. Solarize Tint

Services at this Location:

Hill Country Flowers

Services at this Location:

See What Everyone Says About Our Ignition Interlock

Get Started

Locations

Support

Partners

Contact Us

Want to speed up the installation appointment process?
We can get you a quote faster if you fill out the information below.