Opteev is a technology company that makes the world a safer place for humanity by bringing new products to market to improve air quality in the environments we live in, from workspaces to schools and everywhere in between. Our innovative products screen people and places to deliver a sense of comfort and security for everybody to enjoy their lives without reservation.


222 E. Thomas Ave. Baltimore, MD 21225 USA



Instant Accurate COVID Detection

Freedom is knowing


World’s First Instant COVID Detection
Personal Devices.

Studies From the Center for Infectious Disease Research
(CIDR) Show 100% Accurate Detection…Instantly!

COVID-19 Detection As Quick & Easy as Breathing

Limited Stock Available. Shipping Now!


Founders Edition - Personal-space Instantaneous Airborne COVID Detector.

Years in testing and verified by the CIDR. ViraWarn Patriot Founders Edition is a limited quantity run of the exact same series tested by the CIDR and in hundreds of homes around the world. A very limited quantity is being made available immediately before the new production runs of 
the Liberty series below. Ideal for your personal space such as your desk, such as your dining area, such as your sitting area. Automatically turns on or off to suit usage. Refill kits can last up to 1 month depending on usage. Flashing LEDs indicate room positive or negative conditions.

In the ever-changing age of COVID mutations, the Founders Edition is your perfect technology necessity for your personal space.
Limited stock available… Shipping today!


Covid Detection in
a Few Minutes or Less

Works with any variant.

Edge Artificial
Intelligence filters out false readings

The Science of ViraWarn

ViraWarn’s patented & proprietary Charge Transference Technology uses the charge-transfer complex of spiked protein viruses in an engineered media of high resistivity.

When viral particles drift through the engineered media they produce unique polarized signatures which are detected by ViraWarn’s advanced biosensors and sent to an onboard processor to screen out false positives using specialized and tested algorithms.

Final output is displayed on the device in the form of either RED or GREEN LEDs depending on the diagnostic condition.

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COVID breath analyzer


Covid-19 Room Detector


Covid-19 Room Detector (Small)

Liberty Plus

Covid-19 Room Detector (Large)


Covid-19 Room Detector


Covid-19 Room Detector


Covid-19 Room Detector


Covid-19 Room Detector

Instant Accurate COVID Detection

Get Your Freedom
Back Again!

Forget about the uncertainty and fear of infecting high- risk relatives and friends. Or after a bus ride. Or after dining out. Or after going to church. Or after being with friends at a bar. Or after going to the gym. Or taking an Uber…

ViraWarn delivers the total peace of mind of freedom again. We make the unknown known instantly.

Backed by Science. Verified by the CIDR. Powered by Love.


ViraWarn by Opteev is the first affordable airborne COVID-19 detector. Think of it as a smoke alarm but for COVID-19. ViraWarn is able to instantly detect particles of COVID-19, any of its variants, or Influenza in the air and trigger an audible/LED alarm as well as alert through its mobile app. ViraWarn is affordable, small in size, portable, and easy to use. Simply turn it on and ViraWarn will continuously monitor the air in a room and instantly alert when these unique virus particles are present.

ViraWarn’s proprietary Charge Transference (CT) Technology is a combination of advanced biosensors, Edge artificial intelligence, and proprietary algorithms. CT Technology uses the charge transfer complex of spike protein viruses in an engineered media of high resistivity. When batches of a spike protein virus drift through the engineered media they produce characteristic electrical polarizability which is detected by ViraWarn’s advanced biosensors. The resulting signal is then analyzed for pattern matching through the Edge AI and proprietary algorithms to avoid false-negative and false-positive responses.

If the infected person is within arm’s length of the ViraWarn, it will detect the contaminated air in less than a minute. If the infected person is not near the ViraWarn device, it will depend on several variable factors such as the airflow of the room, ventilation, and the viral load discharged by the infected person. If the infected person is not near the device, ViraWarn will be able to detect the contaminated air in less than a minute or within several minutes, all depending on the airflow of the room.

ViraWarn continuously monitors and detects viruses with spike proteins. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the virus behind the worldwide outbreak of COVID-19 disease. One of the key biological characteristics of SARS-CoV-2, as well as several other viruses, is the presence of spike proteins that allow these viruses to penetrate host cells and cause infection. Other viruses that have these unique spike proteins besides SARS-CoV-2, and all of its variants, are Influenza, coronaviruses, and H1N1. ViraWarn is able to monitor and detect all of these dangerous spike protein viruses in the air.

ViraWarn’s incredible Charge Transference Technology detects the electrostatic signature of spike protein viruses. COVID-19 and Influenza are both viruses with this unique signature. ViraWarn is not able to tell the difference between COVID-19 and Influenza in the air, but it knows that there is a dangerous spike protein virus in the air and will instantly trigger its alarm to warn of the presence.

ViraWarn monitors the indoor air of a room and alerts of the presence of airborne spike protein viruses. It is not able to pinpoint the infected individual if there are multiple individuals in the room.

Yes. ViraWarn has been tested with live SARS-CoV-2 in a month-long study by the US Government’s National Institute of Allergy and Infectious Diseases (NIAID). This study was conducted in a Bio Safety Level 3 laboratory which is audited by the Center for Disease Control and Prevention (CDC). NIAID is part of the National Institutes of Health (NIH), an agency of the United States Department of Health and Human Services (HHS) and is overseen by its director, Dr. Anthony Fauci. The results of this independent month-long NIAID study show ViraWarn as being 100% accurate and effective at detecting airborne COVID-19 in less than 3 minutes.

Yes. ViraWarn has been extensively tested with symptomatic and asymptomatic COVID-19 infected patients in home isolation and in hospitals. This real-world data shows ViraWarn’s incredible efficacy and accuracy at detecting airborne COVID-19, even for asymptomatic patients.

No. ViraWarn will monitor and detect dangerous viral particles without internet connectivity. ViraWarn possesses Wi-Fi and Bluetooth connectivity so you can control ViraWarn through the ViraWarn mobile app, easily access dashboard reports and alarm activity, and receive viral alerts through mobile notifications in addition to ViraWarn’s audible/LED alarm. When connected to the ViraWarn mobile app you will be able to activate ViraWarn’s silent alarm feature which will turn off the audible/LED alarm on the device and alert through mobile notifications and SMS/email instead. With the ViraWarn mobile app you can also control and access all your ViraWarn devices from one location.

Yes. ViraWarn uses an engineered liquid media of high resistivity in order to detect viral particles. You will receive a mobile notification from the ViraWarn mobile app when it is time to replace the cartridge. If you do not have ViraWarn connected to the internet you will receive visual cues through the ViraWarn LED lights when it is time to replace the cartridge.

This depends on how long the ViraWarn is in use. ViraWarn possesses a proximity sensor so that the device can enter sleep mode when the indoor space is unoccupied to prolong the life of the cartridge. If ViraWarn never went into sleep mode it would be able to run continuously for 200 hours without needing the cartridge to be changed. On average, ViraWarn will be able to run for several weeks without needing to be refilled. Refill cartridges are available at the Opteev ViraWarn store.

Currently ViraWarn is single voltage and runs on 110-120V. ViraWarn will be available in 220-240V capability in early 2022.

No. ViraWarn monitors and detects spike protein virus particles in the air. It does not kill them. When the viral particles enter the device, they are neutralized in the specialized liquid media; however, ViraWarn does not neutralize the particles in the air outside of the device. ViraWarn is a monitoring and detecting device, not a disinfecting device.

ViraWarn can be taken to any indoor room it is needed in. Simply plug the device into an electrical socket and viral detection monitoring begins immediately. ViraWarn is not battery powered at this time.

ViraWarn is intended for indoor use and not for use in a vehicle. ViraWarn possesses a specialized liquid media inside the device that needs to be kept on a stable surface for accurate detection monitoring.