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Dräger Alcotest® 3820 Breathalyzer

Dräger Alcotest® 3820

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Dräger Alcotest® 3820

The Dräger Alcotest® 3820 is a portable breathalyzer that offers responsible drivers a reliable way to take a breath alcohol test and determine their breath alcohol level. The breathalyzer ensures precise breath alcohol concentration (BAC) measurement technology identical to that used by law enforcement.

Precision for Over 60 Years: Measurement Technology Used by Law Enforcement

Dräger has been the world market leader and professional supplier of breath alcohol tests for law enforcement and industry for over 60 years. The measurement technology in the Alcotest 3820 is identical to that in devices used for highly precise breath alcohol tests.

Consistent advances in technology over six decades have made the Alcotest 3820 incomparably fast and reliable today. As a private user or professional driver, you can avoid unpleasant surprises if your breath alcohol concentration (BAC) is checked. 

Dräger instruments perform over 30 million breath alcohol measurements around the world each year. The high quality devices are made in Germany.

Fast and Easy Sampling

The measurement function is activated with the backlit function button. Optional audible feedback provides additional orientation. The breathalyzer is ready to use in seconds and the breath alcohol test can be performed immediately. The same button is used to navigate through the menu.

Replaceable Mouthpiece

The mouthpiece is intuitive to fit and is protected by a cap. A new mouthpiece should be used for each person being tested. Additional mouthpieces are available as accessories. The air channel passes the exhaled air over the device, and only a small sample of this air is drawn for analysis. This ensures that there is no residual alcohol in the device and that all measurements remain precise and reliable.

Always Ready for Use

On cold winter nights or a hot summer day, the breathalyzer is ready for use almost immediately. The temperature range for measurements ranges from -5 to +50°C/23 to 122°F.

Handy and Discreet

Thanks to its compact design, the Alcotest 3820 fits into a pocket. Therefore you can take a breath alcohol test discreetly at any time—no matter where you are. You always can precisely measure your residual alcohol value, whether after a business lunch, at a party, or the morning afterwards.

Designed for Years of Use

The Alcotest 3820 is made in Germany and meets the highest quality standards. Regular calibration of the device ensures that the measurement technology will remain precise for a long time. The North America Dräger service network ensures that you can keep using the device for many years.


Alcotest 3820 Product Information, en-us
Alcotest 3820 Product Information, en-us


Dräger Review special Drugs and Alcohol Brochure, en
Dräger Review special Drugs and Alcohol Brochure, en

Special brochure all around the topic drugs and alcohol.


IFU Alcotest 3820 9033578 ME
IFU Alcotest 3820 9033578 ME

These instructions for use are provided for informational purposes only. Please always read and comply with the instructions for use delivered with the product.


Technical Data

Key Facts

Sensor technology
Dräger Electrochemical Sensor / Fuel cell
Bluetooth Module
System Integration
GPS Module
Data storage
10 Tests
Data readout via PC
Charging of rechargeable batteries in device
Print option
Language conversion by customer

Tests Modes

Active breath alcohol test
Non-Contact breath test
Passive breath alcohol test
Dräger Alcotest mouthpiece
Dräger Alcotest funnel
Displayed Results
Alcohol concentration value will be shown

Technical Data

Measuring range
up to 2.5 mg/L
Operating temperature
23°F - 122°F
Black / White
Connection port
Micro USB
Type of battery
Number of tests from full battery
Protection class
Calibration interval
12 months
Start up time
4 seconds
Analyse time after test sample
3 to 25 seconds
Recovery time to be ready for next test
20 to 120 seconds


CE Sign
EU Police approval (EN15964)
EU Private Use approval (EN16280)
NHTSA Evidential
✓ (AS3547:1997)
German Lloyd
✗ not approved
US Coast Guard
UK Home Office
✗ not approved
Criminal Code of Canada

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Get in touch with Dräger

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Draeger, Inc. – Safety

7256​ ​S.​ ​Sam​ ​Houston​ ​W​ ​Pkwy.,​ ​Suite​ ​100
Houston,​ ​TX​ ​77085