That being said, UV lamps have been and continue to be widely used as a means of sterilization within, for example, the healthcare system. One such reason? Research has found that UVC rays can cut transmission of major superbugs (such as staph) by 30 percent. Many (if not most) hospitals use a UVC-emitting robot that’s about the size of a dorm room refrigerator to sterilize entire rooms, says Chris Barty, a physicist and distinguished professor of physics and astronomy at the University of California, Irvine. Once people leave the room, the device gets to work emitting UV rays, self-adjusting to the size of the room and variables (i.e. shadows, hard-to-reach places) to administer the light for as long as it deems necessary. This could 4-5 minutes for smaller rooms such as bathrooms or 15-25 minutes for larger rooms, according to Tru-D, one type of this device. (FWIW, this is done in tandem with manual cleaning using EPA-approved disinfectants.)

If you want crystal-clear video quality, Ring’s outdoor cameras might disappoint you. We recommend the Arlo Pro 4 Spotlight Camera instead.

But this isn’t the best camera choice if video quality is your number-one concern or if you need free video storage. We’re also looking forward to a battery-powered, solar-powered, or plug-in option for a more DIY-friendly experience.

Our range includes cold light fibre optics, LED ring lights, transmitted light units and stereomicroscope spot lamps.

Ring Alarm's new Floodlight Cam Plus improves on the Ring Floodlight Cam by offering color night vision, incredibly bright floodlights, and even more motion activity zones. But it only comes in a hardwired version, and its video quality is just okay. Ring’s latest release—the Floodlight Cam Pro—offers better sound quality and connects to dual-band Wi-Fi, but doesn’t offer upgraded video quality.

*Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. Safewise.com utilizes paid Amazon links.

Some medical facilities also use UVC cabinets with doors to disinfect smaller items such as iPads, phones, and stethoscopes. Others have actually installed UVC devices in their air ducts to disinfect recirculated air, says Olson — and, given the fact that COVID-19 spreads primarily through aerosol particles, this set-up makes sense. However, these medical-grade devices are not intended for individual use; not only are they prohibitively expensive, costing upward of $100k, but they also require proper training for effective operation, adds Malley.

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It’s also essential that the area is free of anything that could interfere with the UVC light getting to the target, says Malley. “We refer to UV disinfection as a line-of-sight technology, so if anything blocks the UV light including dirt, stains, anything casting shadows then those ‘shaded or protected’ areas will not be disinfected.”

Consider your surface. UVC light is most effective on hard, non-porous objects, according to the FDA. And tends to be ineffective on surfaces with bumps or ridges, as these make it hard for the UV light to reach all the places where the virus might reside, explains Barty. So, disinfecting a phone or desktop screen might be more productive than, say, your rug. And if you really want to wave around a UV light sanitizing wand (Buy It, $119, amazon.com) as if it’s a lightsaber, your best bet is to do so over, for example, your kitchen countertop (think: smooth, nonporous, germy).

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This isn’t necessarily a bad thing. You could set it up to illuminate an area of your backyard that’s accessible only from the house—lighting things up while cutting down on notifications. On the other hand, it would be frustrating to not know what’s triggering the lights if the movement always stays out of frame.

For radiation in the UV region of the spectrum, wavelengths are measured in nanometers (nm), where 1 nm = one millionth of a millimetre. Different wavelengths ...

The main downside to the free version is that you can't record any videos. With the Ring Protect Basic plan, you can only record from one device. If you love your Ring Floodlight Cam and want to try other Ring products with video recording, you’ll have to upgrade to the $10/mo. Plus plan.

The Ring Floodlight Cam is only available as a hardwired unit. That means you’ll have to cut into a wall or ceiling, access existing electrical wires, and splice in the unit—while following all electrical safety protocols, of course.

Choose products that close. A wand-like UV device isn’t your best bet, says Malley. “Living tissues (humans, pets, plants) should not be routinely exposed to UVC light unless it’s in a carefully controlled setting with well-trained and experienced medical professionals,” he explains. That’s because UVC radiation can potentially cause eye injuries (such as photophotokeratitis, essentially a sunburned eye) and skins burns, according to the FDA. So instead exposed light products like a wand or lamp, opt for “enclosed devices” that come with “safety features (automatic shut off switches, etc.) the eliminate the potential to expose living tissues to stray UVC light,” says Malley. One good option: “A container for your phone, especially if [your phone is] left in there for a long time (while sleeping),” such as  PhoneSoap’s Smartphone UV Sanitizer (Buy It, $80, phonesoap.com).

UV light is a type of electromagnetic radiation that’s transmitted in waves or particles at varying wavelengths and frequencies, which make up the electromagnetic (EM) spectrum, says Jim Malley, Ph.D., a professor of civil and environmental engineering at the University of New Hampshire. The most common type of UV radiation? The sun, which produces three different types of rays: UVA, UVB, and UVC, according to the FDA. Most people are familiar with UVA and UVB rays because they’re to blame for sunburns and skin cancer. (Related: Ultraviolet Radiation Causes Skin Damage — Even When You’re Indoors)

This radar technology also pinpoints how far away someone is from your home, allowing you to fine-tune motion activity zones and reduce the number of notifications lighting up your phone.

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UVC rays, on the other hand, never actually make it to the Earth’s surface (the ozone layer blocks ’em), so the only UVC light humans are exposed to is artificial, according to the FDA. Still, it’s pretty damn impressive; UVC, which has the shortest wavelength and the highest energy of all the UV radiation, is a known disinfectant for air, water, and nonporous surfaces. So, when talking about UV light disinfection, the focus is on UVC, says Malley. Here’s why: when emitted at certain wavelengths and for specific amounts of time, UVC light can damage the genetic material — DNA or RNA — in bacteria and viruses, inhibiting their ability to replicate and, in turn, causing their normal cellular functions to break down, explains Chris Olson, microbiologist and program manager of Infection Prevention and Emergency Preparedness at UCHealth Highlands Ranch Hospital. (Note: While UVC rays from artificial sources can also pose risks including burns of the eye and skin — similar to UVA and UVB rays — the FDA upholds that these injuries “usually resolve within a week” and that the chance of developing skin cancer “is very low.”)

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Barty agrees, saying that the devices do in fact emit UVC, but “not enough to really do anything in the amount of time claimed.” Remember, for UV  light to really kill germs, it needs to be shining for a certain period of time and at a certain wavelength — and, when it comes to effectively killing COVID-19, both of these measurements are still TBD, according to the FDA.

We like the utility of the free Ring app. You don’t have to pay to get push notifications whenever motion is detected. Many brands don’t offer that. With Ring, it’s truly possible to self-monitor your camera for free.

To review Ring Floodlight Cams, we compared the specs of each model (Plus and Pro). We also stacked those specs against other floodlight cameras and outdoor security lights on the market. We read reviews, viewed third-party footage, read the user manuals and customer support documentation, and got our hands on the Floodlight Cam Plus. Read more about how we review products on our methodology page.

The coolest feature in this upgraded version is “bird’s eye view,” which shows an aerial view of your home in the corner of the main screen. Yellow dots appear wherever motion was detected, letting you see how someone entered the motion activity zone and where they went.

Pay attention to wavelength. Not all UVC products are created equal — especially when it comes to wavelengths. As mentioned earlier, the UVC wavelength can impact a device’s effectiveness at inactivating a virus (and thus killing it). It may also impact the health and safety risks associated with using the device, leaving you with the challenge of finding a UV light disinfection device that’s powerful enough to kill pathogens without presenting too much of a health risk. So what is the magic number? Anywhere between 240-280 nm, according to the Centers for Disease Control and Prevention (CDC). That being said, a 2017 study found that wavelengths ranging from 207-222 nm can also be effective and safe (although, not as easy to come by, according to the International Commission on Non-Ionizing Radiation Protection). TL;DR — if it gives you peace of mind or comfort to kill even a few germs on your phone, go for gadgets that emit, at most, 280 nm.

Bottom line: “Look for a product with a well prepared and thorough user’s manual, clear specifications of what the UV device delivers for dose, and some evidence of independent third-party testing to confirm the performance claims being made by the product,” suggests Malley.

If that sounds a bit complex, that’s because it is: “UV disinfection is not simple; it’s not one size fits all,” emphasizes Malley. And that’s just one reason why experts and research are still unsure exactly how effective, if at all, it can be against the coronavirus. (See also: How to Keep Your Home Clean and Healthy If You’re Self-Quarantined Because of Coronavirus)

There’s no reason to chuck your Spotlight Cam in favor of the Floodlight Cam if you just want brighter lights. Instead, you can hardwire your existing external lights to the Spotlight Cam mount. They’ll turn on whenever the camera detects motion. How nifty is that?

The floodlight motion sensor also has a wider field of view (270°) than the camera (140°). Depending on how you customize the activity zones, the floodlights might kick on before the camera catches any movement.

The Ring Spotlight Camera is better suited to small areas because its light only reaches 375 lumens. It has black-and-white night vision instead of color vision and can be purchased with different power-supply options. The Floodlight works better in large areas where you can mount it at the recommended height of 9 feet.

After months of frantic hand washing, social distancing, and mask-wearing, it seems that the coronavirus has dug its claws in for the long haul in the U.S. And since the few parts of this scary experience you can control are your own actions and environment, it’s no wonder that you — and practically everyone else — have become cleaning-obsessed. If you didn’t stock up on Clorox and disinfectant wipes back in March, you’ve likely become a pro at navigating Google to find answers to questions such as “can steam kill viruses?” or “is vinegar a disinfectant?” Your missions down the research rabbit hole might’ve even led you to other novel ways of killing germs: namely, ultraviolet (UV) light.

UVC has a track record of being very effective against SARS-CoV-1 and MERS, which are close relatives of SARS-CoV-2, the virus that causes COVID-19. Several studies, including reports cited by the FDA, have found that UVC light may have the same effectiveness against SARS-CoV-2, but many have not been extensively peer-reviewed. Plus, there’s limited published data about the wavelength, dose, and duration of UVC radiation required to inactivate the SARS-CoV-2 virus, according to the FDA. Meaning more research is needed before anyone can officially — and safely — recommend UVC light as a trusted method for killing coronavirus.

You might be able to spot some pitfalls in your home’s security by seeing how people get in or where they go. But the aerial images aren’t always high quality. (They’re borrowed from third-party sources.)

Ultraviolet (UV) light sources are devices that emit light in the ultraviolet spectrum, which ranges from about 10 nm to 400 nm in wavelength. These sources are ...

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Don’t look into the light. Since the long-term effect of UVC on humans is unknown, it’s important to be extremely cautious while using a device. Avoid continued contact with the skin and steer clear of staring straight at the illumination, as direct exposure to UVC radiation may cause painful eye injuries or burn-like skin reactions, according to the FDA. But, ICYMI earlier, the UV disinfection devices you can buy off the ‘gram or Amazon are, in Malley’s words, “underpowered” and come with automatic shut-off features, limiting risks. Still, better to be careful, considering we don’t fully understand the risks. (Related: Could Blue Light from Screen Time Be Damaging Your Skin?)

But what about those times when you can’t check the live feed? Ring should have added an “arm/disarm” function with the siren to make this an even better outdoor security camera.

For over 11 years, SafeWise experts have conducted independent research and testing to create unbiased, human reviews. Learn how we test and review.

Both Ring Floodlight Cams feature two motion sensors: one for the floodlights and one for the camera. This makes the Floodlight Cam super customizable.

UV light has been used for decades (yes, decades!) to reduce the spread of bacteria, such as that which causes tuberculosis, according to the U.S. Food and Drug Administration (FDA). As for its ability to kill COVID-19 germs? Well, that’s not so well-established. Keep reading to find out the expert-backed truth about UV light, including whether or not it can actually prevent coronavirus transmission and what to know about the UV light products (i.e. lamps, wands, etc.) you’ve seen all over social media.

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We think Ring missed out on a great customization opportunity with the Floodlight Cam siren. First of all, we’re glad the 105 dB siren exists since it’s a great way to send a trespasser skedaddlin’.  We also like that you can decide to turn on the siren after checking the live feed.

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The Ring Floodlight Cam is one of many cameras in Ring's repertoire that works with end-to-end encryption (E2EE). This feature keeps your camera feed and recorded clips strictly private under digital lock and key.

They shine at 2,000 lumens. For perspective, the Ring Spotlight Cam’s light is just 300 to 375 lumens, and our favorite motion detector light tops out at 1,800 lumens.

Before you start waving a handheld wand over every nook and cranny in your home, find out what experts have to say about UV light’s disinfection abilities, including whether or not it can kill coronavirus.

There’s also no ability to adjust the resolution, frame rate, or bit rate to improve streaming over slow internet connections.

Although the latest version of the Ring app features geofencing, it doesn’t currently support floodlight automations. This means you can’t schedule the lights to turn on/off when you (and your phone) enter or exit the geofence perimeter. But Ring works with IFTTT, so you can set up an applet to perform this function instead.

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But if you’ve spent ample time researching COVID-19 disinfectants, you know that there are at-home UV gadgets and gizmos hitting the market at warp speed right now, all of which purport sanitizing potential from the comfort of your home. (Related: The 9 Best Natural Cleaning Products, According to Experts)

If you’re a seasoned DIYer, maybe that’s no sweat. Ring provides instructions to help you get it right. But if you’re not confident about tackling this yourself, you’ll have to call an electrician, and that’s an extra expense.

From the Ring app, you can draw motion activity zones for the camera to make sure you get notifications only when it counts. For example, if your neighbor’s yard ends up in the camera frame, you can make sure the camera ignores motion in that area.

We’re hopeful that Ring will release battery- and solar-powered versions of the Floodlight Cam like they did with their Spotlight Cam.

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The Ring Floodlight Cam Plus records in 1080p at 15 fps. That’s sufficient for many people, but not anything to write home about.

Ring recommends installing the Floodlight Cam nine feet high. At this height, the motion sensor detects movement up to 30 feet away, and the camera clearly shows people’s faces. Mounting the Ring Floodlight camera lower than nine feet reduces the motion sensor’s range, and mounting it higher reduces the camera’s image quality.

The app also features an on/off toggle for the lights, and you can set up light schedules to keep the floodlights on throughout the night.

The floodlights automatically turn on when motion is detected but only at night. They also automatically turn off about 30 seconds after sensing motion, and you can adjust this time from the Ring app.

And until there’s more research and concrete findings that UVC light can in fact kill COVID-19, it’s likely best to just stick to cleaning on the reg with CDC-approved products, stay diligent with social distancing, and, please wear that mask.

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Mercury is a no-no. “Hospitals often use mercury vapor-based lamps because they can make a lot of UVC light and disinfect in a relatively short time,” says Barty. But, ICYDK, mercury is toxic. So, these types of UV lamps require extra caution during cleaning and disposal, according to the FDA. What’s more, mercury lamps also produce UVA and UVB, which can be dangerous for your skin. Look for mercury-free devices, such as Casetify’s UV sanitizer (Buy It, $120 $100, casetify.com) or those that are labeled “excimer-based,” meaning they use a different method (sans-mercury) to deliver UV light.

The floodlight’s motion sensor is already split into three 90° zones. You can adjust the sensitivity of each zone or turn them off entirely, but you can’t draw a unique activity zone for the lights.

“Most home UV light disinfection devices that we have examined and tested [through our research at the University of New Hampshire] do not achieve the levels of germ-killing that they claim in their advertisements,” says Malley. “Most are under-powered, poorly designed, and might claim to kill 99.9 percent of germs, but when we test them they often achieve less than a 50 percent kill of germs.” (Related: 12 Places Germs Like to Grow That You Probably Need to Clean RN)

*SafeWise has conducted impartial research to recommend products. This is not a guarantee. Each individual’s unique needs should be considered when deciding on chosen products.

We like that the floodlights on this Ring cam are bright enough for startling a trespasser or illuminating the driveway for a late-night trash run.

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While experts are unsure of the effectiveness of UV disinfection devices against coronavirus, especially for at-home use, there’s no denying that, pre-pandemic, UVC light had been shown (and even used) to kill other pathogens. So, if you want to give, say, a UV lamp a try, it’s quite possible that it’ll help slow the spread of other germs hiding in your home. A few things to keep in mind before you buy: