Smart Start Ignition Interlock

H&H Automotive

4010 Southwestern Blvd
Baltimore, MD 21229

#1 Ignition Interlock from $1.99/day

No Long Term Contracts

Same-day installation available

(410) 314-1332

Book your install now

Hours of Operation:

Day	1st Hour Block	2nd Hour Block
Sun	Closed
Mon	8:00am - 5:00pm
Tue	8:00am - 5:00pm
Wed	8:00am - 5:00pm
Thu	8:00am - 5:00pm
Fri	8:00am - 5:00pm
Sat	Closed

Services at this Location:

Installations
Calibrations

Book an Installation

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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Interested in an IID ASAP (within 7 days)

I eventually need an IID (in MORE than 7 days)

I am a current customer and need customer service

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I consent to 1A Smart Start LLC and/or its franchisees' reaching out to me multiple times on an ongoing basis using telephone, text and/or email, including autodialed and prerecorded calls and texts, about our products, services, promotions, and other offers. This consent is not required to purchase goods or services. To opt-out of text messages reply "STOP", and to opt-out of emails click the unsubscribe link in the email. For texts, text "HELP" for help.

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By providing my information and clicking “Book Your Install Now,” I authorize [Insert Legal Name of Franchisee, distributor, or affiliate] to contact me at the phone number above via phone and/or text using multiple and periodic autodialed and prerecorded calls and texts for marketing purposes. Not a condition for purchase. Message and data rates may apply. To opt-out of texts, reply “STOP”.

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Installation Due Date

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Or Call (410) 314-1332 Now!

¡O llame ahora al (410) 314-1332!

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 H&H Automotive in Baltimore

Name: Smart Start Ignition Interlock
Address: 4010 Southwestern Blvd, Baltimore, MD, 21229, US
Telephone: (410) 314-1332
Rating: 5

If you live in the Baltimore, Maryland area and need an Ignition Interlock Device, Smart Start is your choice. We offer affordable Ignition Interlock rates, reliable devices and a knowledgeable customer care team ready to answer your questions around the clock.

It’s time to schedule an Ignition Interlock installation appointment at H&H Automotive today. Let us get you back on the road quickly after a quality installation. The shop is conveniently located at 4010 Southwestern Boulevard, Baltimore, Maryland.

Schedule your breathalyzer installation now by calling (410) 314-1332 or by filling out our online form. You can find other convenient Smart Start locations in Baltimore or throughout Maryland.

(410) 314-1332

Frequently Asked Questions

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

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.

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

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 in Maryland:

Two valid forms of identification—one of which should include a photo of you.
Proof of residence.
Any and all court documents that may be relevant to your Ignition Interlock Device requirement or your restricted driving period.
Vehicle registration. If you do not own the vehicle on which you’re installing the Ignition Interlock Device, or if that vehicle is not registered to you, you will need to bring a letter of permission from the registered owner stating that you are allowed to install an Ignition Interlock Device on the vehicle.
The vehicle on which you’ll be installing an Ignition Interlock Device (IID).

If you have any additional questions or concerns about the installation process or what is required for a successful installation, please don’t hesitate to call our customer care team at (800) 831-3299. You can also click on the chat window below to begin a discussion with one of our customer care advocates.

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

You may be able to service your Ignition Interlock Device at any Smart Start service center nationwide. However, we strongly suggest checking with your state authority in Maryland before seeking service outside of your state. Find the nearest Smart Start service center here.

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

Typically, you will need to service your Ignition Interlock Device (IID) once every 30-60 days or as determined by your jurisdiction in Maryland.

What constitutes a violation in Maryland?

Ignition Interlock Device violation criteria can vary by state. Any and all of the following may constitute a violation in Maryland:

A skipped rolling retest
Tampering with the Ignition Interlock Device in any way
Any breath sample that registers a BrAC above .02 percent
Missing your scheduled IID service appointment

Learn more about Ignition Interlock Device violations.

How can I pay for calibration?

In Maryland, 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.

Nearby Locations

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Baltimore, MD 21229

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Poptronics

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See What Everyone Says About Our Ignition Interlock

Excellent TrustScore Rating

February 25, 2026

"Best call on the phone with two workers. I got disconnected from the first call and the worker warned me but gave me a code so when I came back i could finish signing up. Overall, loved the customer service and they answered all my questions and helped me quickly."

Erica O.

United States

February 25, 2026

"Tracy was wonderful. Very sweet, professional, and informative, which made a difficult and less than ideal situation easier. "

RM.

United States

February 25, 2026

"The agent that handled my situation was greatly helpful.\n In the success and the completion of my registration. And furthermore, the upmost appreciation of this agent going the extra mile and having the patients to walk me through\n Parts in which I didn't understand\n Very thankful."

Dion M.

United States