INTERLOCK 7500 Alcohol Ignition Interlock Device

Intrelock 7500 Alcohol Ignition Interlock

The Drager Interlock 7500 is a high-tech system that prevents a vehicle from starting if the driver’s breath alcohol content exceeds a certain limit. This alcohol immobilizer is designed for both personal and company vehicles, It ensures safety and compliance with legal requirements for controlling alcohol consumption while driving.

Key Features:

✔ Precise measurement – detects alcohol in the driver’s breath with high accuracy
✔ Automatic ignition lockout – prevents the engine from starting if alcohol is detected in the breath
✔ Operates under extreme conditions – temperature range from -45°C to +85°C
✔ Suitable for various vehicles – works with 12V and 24V electrical systems
✔ Event logging – stores information about all tests and faults
✔ Easy to use – clear on-screen messages make the system easy and intuitive to use

How does it work?

1️⃣ The driver must provide a breath sample before starting the vehicle.
2️⃣ The Interlock 7500 analyzes the sample and determines the blood alcohol concentration.
3️⃣ If the result is negative, the engine can be started. After a brief stop, a retest is not required.
4️⃣ If the result is positive, the ignition remains locked. The driver may retake the test after a set period of time.

Technical Specifications:

• Measurement range: up to 6.00‰, alcohol indication for alcohol levels above the upper range
• Operating temperature: -45°C to +85°C
• Power supply: 12V ~ 24V
• Current consumption: < 1mA in sleep mode; <2.5A in active mode
• Maximum current through the relay: 40A peak, 16A continuous
• Dimensions:
  📌 Control module: 148 mm x 90 mm x 36 mm (240 g)
  📌 Measuring module (breathalyzer): 61 mm x 148 mm x 36 mm (240 g)

Distinctive features:

• Very intuitive: the interface is easy for drivers to use; even those with no experience can easily figure out what to do
• Mouth alcohol detection feature: prevents false positives (and the recording of a violation) if there is residual alcohol in the driver’s mouth from liquids or food
• Preheating timer: Starts the warm-up at the set time, saving time spent waiting for the testing system to prepare at sub-zero temperatures
• Operating Period Setting: defines the time when alcohol measurements can be taken—prevents misuse of the system
• Ergonomic design: the mouthpiece attaches conveniently to the back of the measuring module, which in turn attaches conveniently to its stand
• Large internal memory: stores data for the last 500,000 events
• Secure personal data: the data is encrypted and well protected. To prevent tampering, only authorized personnel have access to it
• Many additional accessories: case, “click” stand, GPRS (LTE) module for data transmission to dispatchers, IR module for wireless data transfer to a computer, kits for connecting to external devices, camera for capturing the subject’s image

Who is the Interlock 7500 suitable for?

✅ Passenger cars – for people who want to ensure that they or their loved ones do not drive under the influence of alcohol
✅ Company and work vehicles – for transportation companies and businesses that want to ensure a high level of control over their employees
✅ Public transportation – buses, taxis, and other vehicles where safety is of the utmost importance

Additional information:

🛠 Periodic Calibration Requirement – Follow the manufacturer’s requirements to ensure the system functions properly: Calibration of the measuring module (breathalyzer) once a year. This must be performed at an authorized service center. Only the measuring module should be sent in, and to prevent the vehicle from being taken out of service, a spare unit is installed in its place (if none is available, Keragon can provide one) or the system is switched to emergency mode, in which case no alcohol test will be triggered. The Interlock 7500 is not a metrological measuring instrument and does not require additional calibration by the Bulgarian Institute of Metrology.

⚠Emergency Mode – In the event of a problem, the driver can bypass the system by switching it to emergency mode using a code provided by a dispatcher or immediate supervisor. Once emergency mode is activated, the system will not require an alcohol test for several days (the duration is configurable). This allows the driver to complete the route and take the vehicle to a service center designated by the responsible authorities for inspection. At the service center, the system will be inspected and repaired. Violation data is verified and analyzed to prevent attempts at abuse by the driver. If the driver does not take the vehicle in for inspection by the end of the set emergency mode period, the system will lock the ignition until authorized specialists arrive.

✅ Easy installation – can be installed in virtually any vehicle or machine: passenger cars, minibuses, buses, trucks, forklifts, agricultural machinery, construction cranes, trains, regardless of the type of propulsion. In certain cases, such as with refrigerated trucks, the braking system can be disabled to ensure uninterrupted operation of the refrigeration unit. Installation can be performed by a qualified technician, at the vehicle’s authorized service center or at a trusted repair shop.

Contents:

• Measuring module (breathalyzer/handset/handheld)
• Control module
• Installation kit
• V-type mount for mounting in the vehicle
• 3 mouthpieces for repeated (personal) use
• Installation and User Manual

What is not included in the price:

• Installation in the vehicle.  This can be performed at an authorized service center, a trusted service center (recommended by Keragon), or by your own qualified technician (Keragon will assist).
• Additional accessories. These can be ordered separately.
• Integration with a telemetry system. Performed by the system provider.

Read more about alcohol immobilizers.

Learn more about detecting residual alcohol in the mouth.

Video – Interlock 7500 for monitoring company drivers:

Brochure

Interlock 7500 User Manual