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About Defender Detectors


Defender Detectors Inc. is a subsidiary of Don Smith and Associates, Inc. (DSA), the manufacturer's representative for the Defender carbon monoxide alarms and low level CO monitor.

Incorporated in 1992, DSA is a member of the Indoor Air Quality Association (IAQA), National Fire Protection Association (NFPA), and Manufacturer's Agents National Association (MANA).

The Defender carbon monoxide alarms and monitor are manufactured in Canada under stringent quality management practices certified to AS 9100C, ISO 9001, ISO 13485 and TS 16949.

Wholesale prices are available to distributors, dealers, contractors, government agencies, and commercial end-users.

Please call or e-mail us if you have any questions or to request a quote. We are available M-Th, 7am-4pm PST:

Defender Detectors
Don Smith and Associates, Inc.
dba Entech Supply
Manufacturer's Representative
Portola, California
(800) 253-1529


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