Information on breathalyzers, ignition interlock devices, and DWI and license reinstatement laws regarding ignition interlocks.
Wednesday November 26th 2014

IID Installers

Texas Approved Breath Alcohol Ignition Interlock Vendors



Texas LogoThe list below provides the Breath Alcohol Ignition Interlock Devices (BAIID) and the vendors who sell these car breathalyzer devices that have been approved by the state of Texas.

The list of approved vendors is provided for drivers seeking the installation of an ignition interlock device (IID) due to a court order and to obtain a Texas Restricted Interlock License. This order often follows a second DWI conviction or a first DWI conviction with a Commercial Driver License (CDL) as part of probation. For the private use of an IID, such as installing a breathalyzer device for parents to monitor teenage drivers or employers to monitor employees, other vendors may be used.

For BAIID installation centers in Texas contact an approved vendor. Below the list of approved interlock companies is a list of the specific models that are approved for use in Texas.

This list is subject to change and nothing on this site should be considered legal advice. For more information on BAIID installation contact the Texas Department of Public Safety. For legal advice contact a licensed attorney.

Texas Approved BAIID Vendors

  • Advantage Interlock, Inc  (800) 993-4990
  • Alcohol Detection Systems, Inc  (800) Stop-DWI
  • CST Inc, Austin TX  (512) 374-1833
  • CST Inc, Des Moines, IA  (877) 777-5020
  • Draeger Safety Diagnostics Inc  (800) 332-6858
  • Guardian  (972) 353-5692
  • Lifesafer Interlock of Texas (866) 503-4500
  • National Interlock Services of TX  (866) 863-4350
  • Smart Start  (800) 880-3394

Approved Interlock Devices

  • Alcohol Detection Systems DM-904
  • Draeger 3530920
  • Draeger XT
  • Guardian 3060
  • Guardian AMS2000
  • Intoxilock
  • Lifesafer FC100
  • Smart Start SSI1000
  • Smart Start SSI 20/20



Remember to follow the required procedures set forth by the Texas Department of Public Safety, ensure proper maintenance and calibration of the device, and consult an attorney for counseling on DWI and licensing matters.

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