Cantronic Systems Inc.
FDA issued a warning letter to Cantronic Systems Inc. (Coquitlam, BC, Canada) on Mar 4, 2021. Subject: Device Adulterated and Misbranded.
From the letter: “Your Temperature Scanners are offered for sale in the United States without marketing approval, clearance, or authorization from FDA.”
FDA published a close-out letter on Jul 25, 2023. The findings below are from the original warning letter.
At a glance
What a reviewer notes before reading: findings, citations, the response deadline and what the letter warns of.
- Violations
- 2 findings · 1 issue type
- Cited
- No CFR or ISO section
- Response due
- Fifteen (15) business days of receipt
- FDA asks for
- 1 actions
- Named as possible actions
- Seizure, injunction, detention, civil money penalties, refusal of admission
- Issued by
- Center for Devices and Radiological Health
- Published status
- Close-out Jul 25, 2023
AI assisted findings
Model-assisted reading of each issue. Open one to see the FDA text it comes from, and check it against the full letter.
01Registration, listing & premarket · 21 U.S.C. § 351(f)(1)(B), 21 U.S.C. § 360e(a), 21 U.S.C. § 360j(g)The products are adulterated because they are offered for sale without required FDA premarket approval or an approved investigational device exemption.
Your Temperature Scanners are offered for sale in the United States without marketing approval, clearance, or authorization from FDA. Accordingly, your products are adulterated under section 501(f)(1)(B) of the Act, 21 U.S.C. § 351(f)(1)(B), because your firm does not have approved applications for premarket approval (PMA) in effect pursuant to section 515(a) of the Act, 21 U.S.C. § 360e(a), or approved applications for an investigational device exemption (IDE) under section 520(g) of the Act, 21 U.S.C. § 360j(g).
02Registration, listing & premarket · 21 U.S.C. § 352(o), 21 U.S.C. § 360(k)The products are misbranded because the firm failed to submit a premarket notification (510(k)) to FDA before introducing them into interstate commerce.
Your products are also misbranded under section 502(o) the Act, 21 U.S.C. § 352(o), because your firm did not notify the agency of its intent to introduce these products into interstate commerce for commercial distribution as required by section 510(k) of the Act, 21 U.S.C. § 360(k).
What FDA requested
- Please notify this office in writing within fifteen (15) business days from the date you receive this letter of the specific steps you have taken to correct any violations, including an explanation of how you plan to prevent these violations or similar violations from occurring in the future. Include any documentation of the corrections and/or corrective actions you have taken. If you cannot complete corrective actions within fifteen (15) business days, state the reason for the delay and the time within which you will complete the corrections.
FDA Warning Letter
13 paragraphs · 1 sectionText as published on FDA.gov, retrieved Oct 19, 2026. Layout added for reading; the wording is FDA’s. View on FDA.gov (opens in a new tab)
1Letter text
10 paragraphs
This is to advise you that the United States Food and Drug Administration (FDA) reviewed your website at the Internet address https://www.cantronics.com on February 11, 2021. The FDA has observed that your website offers products for measuring human body temperature, specifically the FeverScan M3000N, FeverScan M3000L, LGC300 Body Temperature Scanner, FeverScan M3000B, FeverScan M3000SD, FeverScan M3000S, FeverScan M3000P02, FeverScan M3000P03, FeverScan M3000P04, and FeverScan M3000P05 (collectively,“Temperature Scanners”), for sale in the United States. Under section 201(h) of the Federal Food, Drug, and Cosmetic Act (the “Act”), 21 U.S.C. § 321(h), your Temperature Scanners are devices because they are intended for use in the diagnosis of disease or other conditions or in the cure, mitigation, treatment, or prevention of disease, or to affect the structure or any function of the body. Telethermographic systems are devices when they are intended for a medical purpose, such as body temperature measurement, including such use in non-medical environments.
Your Temperature Scanners are offered for sale in the United States without marketing approval, clearance, or authorization from FDA. Accordingly, your products are adulterated under section 501(f)(1)(B) of the Act, 21 U.S.C. § 351(f)(1)(B), because your firm does not have approved applications for premarket approval (PMA) in effect pursuant to section 515(a) of the Act, 21 U.S.C. § 360e(a), or approved applications for an investigational device exemption (IDE) under section 520(g) of the Act, 21 U.S.C. § 360j(g). Your products are also misbranded under section 502(o) the Act, 21 U.S.C. § 352(o), because your firm did not notify the agency of its intent to introduce these products into interstate commerce for commercial distribution as required by section 510(k) of the Act, 21 U.S.C. § 360(k). The introduction or delivery for introduction of these products into interstate commerce is prohibited under section 301(a) of the Act, 21 U.S.C. § 331(a).
Use of telethermographic devices for the assessment of human body temperature can present potentially serious public health risks. Such risks may include, but are not limited to, the device incorrectly detecting a normal human body temperature when a person has an elevated temperature and incorrectly assessing a person to have an elevated body temperature when they do not. A person with an undetected elevated temperature who was subject to temperature assessment using a telethermographic device may, as a result, be less likely to adhere to infection prevention and control guidelines, such as social distancing and using personal protective equipment. These risks are more likely to be present where telethermographic devices scan multiple individuals simultaneously. Your website, https://www.cantronics.com/, includes statements that indicate that your Temperature Scanners are intended to scan multiple individuals simultaneously, including:
“The FeverScan M3000N is ideal for mass temperature screening in public transport situations.” [Published on your website, https://www.cantronics.com/index.php/temperature-screening-cameras]
“The FeverScan M3000P04 is capable of evaluating multiple people in real time” [Published on the FeverScan M3000P04 datasheet, https://www.cantronics.com/images/datasheet/FeverScan-M3000P04-.pdf]
Your firm should take prompt action to correct any violations. Failure to adequately address this matter may result in regulatory action being initiated by the FDA without further notice. These actions include, but are not limited to, seizure, injunction, and civil money penalties.
This letter notifies you of our concerns and provides you with an opportunity to address them. After you receive this letter, please notify this office in writing within fifteen (15) business days from the date you receive this letter of the specific steps your firm has taken to correct any violations, as well as an explanation of how your firm plans to prevent their recurrence.
Your response should include documentation of the corrections and/or corrective actions (including those that address systemic problems) that your firm has taken. If your firm’s planned corrections and/or corrective actions will occur over time, please include a timetable for implementation of those activities. If corrections and/or corrective actions cannot be completed within fifteen business days, state the reason for the delay and the time within which these activities will be completed. If you believe that your products are not in violation of the Act, include your reasoning and any supporting information for our consideration. Your firm’s response should be sent to: Attn: CAPT Alan Stevens Acting Director, Division of Drug Delivery and General Hospital Devices, and Human Factors U.S. Food and Drug Administration Center for Devices and Radiological Health Office of Product Evaluation and Quality OHT3: Office of GastroRenal, ObGyn, General Hospital, and Urology Devices Document Control Center (DCC) – WO66-G609 10903 New Hampshire Avenue Silver Spring, MD 20993-0002 Refer to the reference number CMS 613542 when replying. We remind you that only written communication is considered as official. If you have any questions about the contents of this letter, please contact: Jake Lindstrom, PhD at Jake.Lindstrom@fda.hhs.gov or (301) 796-5716.
If you are not located in the United States, please note that products that appear to be adulterated or misbranded are subject to detention and refusal of admission if they are offered for importation into the United States. We may advise the appropriate regulatory officials in the country from which you operate that FDA considers your product(s) listed above to be adulterated and misbranded products that cannot be legally sold to consumers in the United States.
Finally, you should know that this letter is not intended to be an all-inclusive list of the violations that exist in connection with your products or operations. It is your responsibility to ensure that the products you sell are in compliance with the Act and its implementing regulations.
Citations and trends
Each 21 CFR section, ISO 13485 clause and issue type in this letter, how often it appears across all letters, and its trend by the year FDA issued the letters. 2026 runs to Nov 3, 2026, compared with the same dates last year. Select a row or a bar to see those letters in Letters. As cited in this historical letter, not a statement of current requirements.
This letter cites no 21 CFR section or ISO 13485 clause.
Issue types
Record details
- Issuing center
- Center for Devices and Radiological Health
- Issuing office
- Center for Devices and Radiological Health
- Location
- Coquitlam, BC, Canada
- Letter posted date
- Mar 4, 2021
- Letter issue date
- Mar 4, 2021
- Addressed to
- Not recorded
- Inspection dates · model-assisted
- Feb 11, 2021 to Feb 11, 2021
- Response window
- Not verified in this snapshot. Consult the original letter.
- Record length
- 951 words · 0 recorded redactions
- Published status
- Close-out published Jul 25, 2023
- FDA reference
- 613542
- Original letter
- View on FDA.gov (opens in a new tab)
- Dataset last checked
- Nov 11, 2026 · How this is built
A response window is not a calculated due date. Source excerpts are selected passages. Finding interpretations and categories are model-assisted. Verify the original letter before relying on a finding.