Contact Us

If you are experiencing difficulties with your breathalyzer or have questions about performance, please get in touch via email, phone, or online chat (see the green "help" box on the side of the page). Live chat support is available most days, Mon-Fri 9am-4:30pm PT. is a division of

KHN Solutions LLC
300 Broadway, Suite 26
San Francisco, CA 94133

Phone: 1-415-693-9756
Toll-Free: 1-877-334-6876
Fax: 1-415-358-8030

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