Guardian Interlock

Guardian Interlock is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Drug & Alcohol Detection & Testing
• Ignition Interlock Devices

North American Industry Classification System (NAICS) Categories:

• Other Motor Vehicle Electrical And Electronic Equipment Manufacturing > Ignition Apparatus > Ignition Interlock Devices
• Medical Laboratories > Medical Testing Laboratories > Drug & Alcohol Detection & Testing

Standard Industry Classification (SIC) Categories:

• Electrical Equipment For Internal Combustion Engines > Ignition Apparatus > Ignition Interlock Devices
• Medical Laboratories > Medical Testing Laboratories > Drug & Alcohol Detection & Testing