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About Us

Mid-State Instruments (MSI) is the leading thermal imaging distributor in the United States.

With over 15 years of technical experience, MSI provides customers with an easy and reliable solution for all infrared camera and gas detection needs. Our customers include the US Government, the military, and professionals in manufacturing, research and development and building and energy auditing. MSI contains two subdivisions: Gas Detection Warehouse and Infrared Camera Warehouse.

We are based in San Luis Obispo, CA. Our main address is:

3547 S. Higuera Street, Suite B.
San Luis Obispo, CA 93401.


Call us at (866) 451-2257 or fax us at (805) 576-7629.

Visit for all your gas detection needs!

Visit for all your thermal and infrared camera needs!