Hope & Opportunity has teamed with Guardian Interlock. The Guardian ignition interlock device can get you back onto the road safely and legally after a DUI arrest. The device is a breath analyzer that is attached to the ignition system of your vehicle. In order to start your vehicle, you must first blow into the device. The device’s sensors determine whether your blood alcohol concentration (BAC) is above or below a preset legal limit. If it is below this limit, you may start your car. If it is above the limit, the device prevents your vehicle from starting.

Designed to be easy and accurate, the Guardian ignition interlock device ensures you stay on the road to success. The device design is discreet and comfortable to use. The sensors are accurate and reliable. Service professionals are always an easy call away.

Guardian Interlock Device Benefits

  • The most affordable solution on the market
  • Easy payment options: month-to-month payments
  • Service center locations throughout the U.S.
  • Flexible installation and calibration times including Saturdays and early evenings
  • Easy-connect USB capability makes for quick monitoring appointments
  • Monitoring authority compliance maintained for you
  • Displays days until next service each time the device is turned on
  • Handset is detachable (in states that allow this)
  • Doubles as theft prevention for vehicle
  • Excellent 24/7 online and telephone customer support
  • Full training provided to the participant upon each installation.
  • Bilingual team members to assist you
  • User friendly with easy-to-read display
  • Fast start-up time and rapid test results
  • Audible and visual signaling
  • Fits comfortably in the hand
  • One of the smallest on the market
  • Compact size for space-restricted areas
  • Fuel cell-based devices for consistent accuracy
  • Alcohol specific; no false positives
  • Reduced warm-up time in cold temperatures
  • Not affected by altitude
  • Accuracy exceeds NHTSA specifications (-40° to 180° F)

Common Questions

Device Operation

The Guardian Interlock device is a hand-held sensor attached to the electrical system of your car that measures the Breath Alcohol Content (BAC) in your exhale. If this device detects alcohol above a pre-set limit determined by your state, your vehicle will not start. The device will also require that you perform periodic breath tests to ensure that you stay below that pre-set limit in order to continue driving your vehicle.

The Guardian interlock device is one of the smallest on the market—similar in size and shape to a cellular phone. Our installation technicians have the ability to put most of the devices in the dash. Our design includes the ability to disconnect the handset and conveniently store it in a safe place.

If the device detects alcohol on your breath above the preset-limit, the device will lock down the vehicle for a few minutes. The length of time varies by state and sometimes by county—typically it is between 5 to 30 minutes. Once the mandated time has elapsed, you will be able to attempt the test again. If the device detects alcohol above the pre-set limit again, the device will lock down the vehicle for a longer period of time. It will continue to do this for each subsequent time the system is triggered. Your Guardian service technician can tell you the settings for your local area.

The device is designed to detect alcohol and there are other substances that may trigger it. For instance, some mouthwashes, toothpastes, cold medicines and even lip balms contain alcohol and will trigger the device. This is called a false-positive. Be extremely mindful about what you put in or around your mouth before attempting to start your car. Check with your doctor for any prescriptions that might trigger a false-positive. Our service personnel will be able to train you on the most common alcohol-related products.

The device is a highly sensitive device that will only detect alcohol. However, there are many substances that contain alcohol and so it will detect all types of alcohol, not just that contained in alcoholic beverages. For instance, do not gargle with Listerine before you start your vehicle as this will undoubtedly register as a false-positive. If your device detects alcohol, consider everything that you have consumed or applied to your face.

Your vehicle can be driven by anyone who could drive the vehicle before the device was installed, however, they will be required to pass the same breath tests as you, and any test violations will be registered on your reports to the monitoring authorities. The Guardian service center technicians will train other drivers at no additional charge.

Guardian Interlock will remove the device at your request. However, as this is a legally-governed enforcement program, you will be putting yourself out of compliance which may cause you to lose your driving privileges. To retain your driving privileges, it is imperative that you contact your monitoring authority and receive approval before asking Guardian to remove the device.

The reinstatement of your license varies by state and county, we suggest check with the person or agency that restricted your license at first. Our process is simple, on your last monitor appointment be prepared to make an appointment and just come in and we will remove the device and hand you your completion report. At this time we will thank you and wish you good luck and safe driving in the future.

In the unlikely event our device fails, we have a system in place that allows you to contact our store personnel with any question or concern. You can reach us always at our national number, 800-499-0994. This number will automatically route you to your nearest care center or our operator will give you the closest location. Most service related issues can be resolved over the phone, in rare instances that your device has interrupted its service; we will have a new device in your vehicle within 24 hrs.

Monitor Appointments

Once your device is installed, you are required to return to the Guardian service center periodically in order for Guardian to download the event logs from your device and make it available to the monitoring authorities. This appointment is mandated by the state and may be every 30 or 60 days, depending on the state and whether there are any monitoring violations. Your device will display the number of days until the next appointment whenever the device powered up. Make sure that you have scheduled your appointment in time to comply with this requirement. Failure to have your device serviced in time will result in a lockout of the system and will require that your vehicle be towed to the service center.

All of our reports to you have the next scheduled time and date listed. Typically the service tech will offer you upcoming monitor appointment times at each appointment. The Guardian Interlock device will also displays a countdown to your next service day. If you need a reminder though, call 800-499-0994 and our technician can retrieve that information for you.

The system will give you daily reminders of your upcoming appointments and you can have us call you to remind you. However, if you do miss your appointment, the device will put your vehicle in permanent lockout and will then need to be towed to the Guardian service center to have the lockout reset.

Appointments are tightly scheduled ahead of time to ensure that we assist each customer as quickly and as efficiently as possible. It may be possible for a Guardian service technician to help you without an appointment, however, his or her priority will be those customers who have previously scheduled appointments. To ensure the fastest service, call the Guardian service center to schedule an appointment before you come.

From the moment the device is installed in your vehicle until it is removed, the onboard database will capture a series of compliance events. These events include:

  • Breath Alcohol Content (BAC) level detected
  • The time the vehicle’s engine was started and stopped
  • The vehicle’s run-time
  • Key events, such as the timing and results of rolling retests
  • Any time it was plugged in or unplugged

All of your compliance event information including installation, monitoring, and removal reports is stored on a secure, centralized database that is updated each time you bring your vehicle in for a service appointment. Monitoring authorities have 24/7 access to this information.

We store all our data–including installation, monitoring, and removal reports–in a central data base.  You will have a copy of all service records. Most states also require that we supply this information to them on a regular basis. Your interactions with the ignition interlock device are all logged, and the law requires that we report all violations to the agency that suspended your license.

We do! All Guardian Interlock service centers send the appropriate documentation to the monitoring authorities. Notification of both your installation and completion of the program are taken care of as part of our service to you.

Terms of license reinstatement vary by state and by county, so it is wise to check with the agency responsible for your DUI conviction. We monitor your progress for the duration of your probationary period, then make a final appointment to remove the device and hand you your completion report.  Your car then reverts to its original ignition system and we wish you a safe driving future.