Does the model suit your lighting task?
In this selection, Elgato Key Light Panel 35 by 25 centimetres stands for face lighting at a distance of 1 to 1.5 metres and for seats further back. It is not intended as task lighting on the desktop, nor for a room without usable Wi-Fi. That is a narrower and more honest statement than a blanket 'good' or 'bad'. A lamp can be technically sound and still disappoint in the wrong place. This review therefore begins with the intended use, not with a score.
Work out the illuminance yourself: illuminance equals luminous intensity divided by the square of the distance. From the registered 858 candela you get 3,432 lux at 0.5 metres, 858 lux at 1 metre and 381 lux at 1.5 metres. The light surface measures 350 by 250 millimetres, that is 875 square centimetres. At half a metre, the panel width is therefore 0.7 times the distance, and the larger this ratio, the softer the shadow edge under the chin. The advertised 2,800 lumens appear in no EU registration: 2,400 lumens at 32 watts are registered for the current version and 2,600 lumens at 34 watts for the older version. With the factor from Annex II registered in each case, the current version gives 81.7 lumens per watt and therefore class G, and the older version 89.9 lumens per watt and therefore class F.
For this model there are 5 readable product features from the Amazon listing. They are not presented as independently confirmed measured values. We explicitly separate what the source states from our practical assessment. We do not claim any long-term, laboratory or room trials of our own. We reproduce the quoted listing texts unchanged in content, but apply the house style for punctuation: dashes become a colon or comma, ranges are written out with “to”, and special characters and advertising symbols are removed. Numbers, units and statements are left untouched.
Product data and sources
| Product | Elgato Key Light Panel 35 by 25 centimetres |
|---|---|
| Brand | Elgato |
| Category | Desk lamps |
| ASIN | B07L755X9G |
| Sources as of | 27 August 2026 |
| Type of research | Data and source analysis; no laboratory or long-term trial of our own |
Listing detail: Wi-Fi-capable, switch on and off via desktop app and adjust the light precisely…
What the source says: Wi-Fi-capable, switch on and off via desktop app and adjust the light precisely
Why this matters: The system information should be checked against your existing smart home. Basic functions and manufacturer-specific effects are not automatically available in the same way on every platform. This line sounds like an extra feature, but it describes the only way to operate the device. There is no button, dial or switch on the device. In its system requirements, Elgato asks for a Wi-Fi-capable device for setup, and the support article on pairing names Control Center as the route through which the light is switched, dimmed and its colour temperature set. Without usable Wi-Fi and without the installed app, the light stays in its last saved state.
Listing detail: 2,800 lumens
What the source says: 2,800 lumens: light up the entire work area and dim the light down to a gentle glow
Why this matters: The amount of light can only be assessed together with beam angle, distance and illuminated area. A high figure alone does not say whether the light arrives in the right place. That is the job of a desk lamp, not of this device. A video panel stands next to the camera and lights a face; it does not light a work surface evenly. In the EU register, Elgato registers the light source as directional with a 111 degree beam angle, which is a cone on a subject and not area lighting. Anyone who wants to work on paper and also look good on camera needs two separate light sources.
Listing detail: 2,900 to 7,000 K
What the source says: 2,900 to 7,000 K: adjust the colour temperature, from glowing orange to arctic blue
Why this matters: The stated colour temperature describes the effect, not the brightness. In everyday use, what matters is whether fixed steps or a continuous range are offered and whether the setting is saved. The advertised range of 2,900 to 7,000 kelvin is a white range and not a colour change. 2,900 kelvin is warm white and lies above candle or incandescent light, and 7,000 kelvin is a cool daylight white and not a blue. In the EU register the span is also registered more narrowly: 3,000 to 6,500 kelvin for the older version, and for the current version only a single value of 4,500 kelvin. This device cannot produce coloured light.
Listing detail: 160 Osram LEDs
What the source says: 160 Osram LEDs: remarkably low heat build-up compared with softboxes
Why this matters: This detail describes a product property, but it does not yet answer whether it is practical for face lighting at a distance of 1 to 1.5 metres and for seats further back. What matters is the link to the planned place of use. This detail comes from the document for the Key Light MK.I, which Elgato itself lists as legacy and end of life. The technical data for the current Key Light MK.2 no longer name an LED count, nor a colour rendering index. Which fitting you get depends on which of the two device versions is delivered, and you can only tell from the brown or blue box and from the model number 20GAK9902 or 20GAK9901 on the back. In parts, the listing text here describes the older device.
Listing detail: opal glass surface
What the source says: Opal glass surface: for even, glare-free light diffusion
Why this matters: This point should be checked against dimensions, instructions and your existing installation before purchase. A listing can contain variants or shortened wording. On a video light, the diffuser really is the most important component, but not because of the material, rather because of its area. Here it is 350 by 250 millimetres, and therefore 875 square centimetres, roughly ten times that of the Litra Glow and roughly a third more than the Key Light Air MK.2. The larger this area in relation to the distance, the softer the shadow edge under the chin fades out. At half a metre, the panel width here is 0.7 times the distance, and with the Litra Glow only 0.18 times.
Use in daily life
In everyday use, the table edge decides. The light clamps onto the tabletop, the clamp opens up to 60 millimetres, and the pole extends from 55 to 125 centimetres, with Elgato itself recommending 90 centimetres. It therefore does not stand on the table but above and beside the monitor, and needs free height rather than free standing space. Power comes from a supplied plug-in power adaptor with 13 volts direct current, so a socket within reach is essential. It is operated exclusively via Control Center, a Stream Deck or the separately available remote, because there is no button on the housing.
For this model, the purchase decision should therefore hinge on a concrete situation. Before buying, write a sentence such as: “I need light for …” and add place, time of day and activity. If the model does not clearly fulfil this task, an alternative from the same category is probably the better choice.
For working on paper, a classic desk lamp remains the right choice. Elgato itself registers the light source as directional with a 111 degree beam angle, which is a cone on a subject and not even illumination of a work surface. Nor is this device suited to a room without usable Wi-Fi or to a network in which you are not allowed to pair devices. And it is not a reading light: anyone who looks across the desk with 875 square centimetres of light surface dazzles themselves.
Strengths and limits of the assessment
What speaks for the model
- Product image, ASIN and listing data are clearly linked to one another.
- The design can be matched to a specific lighting task: for face lighting at a distance of 1 to 1.5 metres and for seats further back, not as task lighting on the desktop and not for a room without usable Wi-Fi.
- The available features allow a targeted check before buying, without inventing a star rating.
What remains open
- No long-term use of our own, no light measurement and no documented load check.
- Listing details can be abbreviated or change with variants and model updates.
- Room effect, glare and ease of use depend on your location and daily routine.
This purchase most often fails because of the controls, not the light. Anyone expecting a lamp with a button faces a device that cannot even be dimmed without a Wi-Fi network and without the installed app, and on an office or guest network pairing regularly fails because of missing permissions. The second disappointment is the brightness, if you have the 2,800 lumens from the advertising in mind: the EU register lists 2,400 lumens for the current and 2,600 lumens for the older device version, and because the light comes from the side and from a distance, it looks weaker on your face than the figure suggests. And third, before opening the box you do not know which of the two device versions you will get, because the listing names neither the model number nor the generation.
What you should measure and check before buying
First measure the distance from your face to the spot where the light is to stand, and match it to the values we calculated from the registered luminous intensity of 858 candela: roughly 3,432 lux at 0.5 metres, 858 lux at 1 metre and 381 lux at 1.5 metres. Then measure the thickness of your tabletop at the clamping point, because the clamp only opens up to 60 millimetres, and check whether enough height is free above the table, since the pole extends from 55 to 125 centimetres and Elgato itself recommends 90 centimetres. Also measure the panel width of 35 centimetres against the free space beside the monitor, because at 1.3 kilograms on an extended pole the light needs a place where nobody brushes past. And finally check your Wi-Fi: without a network in which you are allowed to pair a device, the light cannot be operated.
- Clarify the task: Clarify whether you need light for the camera or light for the tabletop. These are two different device classes, and this device can only do the first.
- Work out the distance: Measure the path from the panel to your face and match it: roughly 3,432 lux at 0.5 metres, 858 lux at 1 metre, 381 lux at 1.5 metres.
- Check the table edge: Measure the tabletop thickness at the clamping point against the limit of 60 millimetres and check whether 90 centimetres of pole height remain free above the table.
- Clarify the network: Check whether you are allowed to pair a new device on your Wi-Fi. Without a network and without Control Center, nothing on this light can be adjusted.
- Check the device version: The box reveals the generation: blue stands for 20GAK9901, brown for 20GAK9902. Compare the number on the back before you dispose of the packaging.
If you are unsure how much light your room needs at all, work it out once: the lumens-to-watts chart turns wattage figures into actual brightness, and how many lumens per room you need depends on floor area and activity. More models in this area are covered in the overview of desk lamps, and the lighting calculator translates your room into a concrete target brightness.
Set-up, position and first check
Assemble first and pair only afterwards. The quick start guide provides for exactly this order: screw the panel onto the pole at one of the four edge threads, set the height, tighten the clamp on the tabletop, connect the power adaptor and only then bring the light onto the Wi-Fi. Place the light slightly to the side of the camera and just above eye level, not directly behind it. Check the result in the camera image and not with the naked eye, because the camera sees colour temperature and shadow edges differently from you. When aligning it, expect the fully extended pole to wobble, according to Elgato's own instructions.
After set-up, do not judge the light only in daylight. In the evening, switch the rest of the lighting as you normally use it, and check the situation from seated, standing and walking height. Only then do disturbing reflections, hard shadows or an unfavourable switch position become visible.
Keep the instructions and the model designation. That helps with spare parts, with a later query about the product and in a guarantee claim. Replacing the light source is not intended; at the end of its life the complete device is replaced. This device is intended for indoor use only and is not approved for damp rooms or outdoors.
Comparison with similar models
The comparison does not name winners. It shows models of the same category so that you can see whether one of them is closer to your lighting task. If two models have the same task in the Assessment column, they do not differ in purpose but in design, dimensions and features. The column then states what is actually different according to the sources.
| Model | Brand | Assessment | Details |
|---|---|---|---|
| Elgato Key Light Panel 35 by 25 centimetres | Elgato | for face lighting at 1 to 1.5 metres distance and for seats further back, not as task lighting on the desktop and not for a room without usable Wi-Fi | This review |
| Elgato Key Light Air MK.2 with 15-inch panel | Elgato | for face lighting at a normal desk at 0.5 to 0.8 metres, not as task lighting on the desktop and not at full brightness as long as only the computer's USB-C port is connected to it | Read the review |
| Logitech Litra Glow Panel 9 by 9 centimetres | Logitech | for face lighting at short range directly above the monitor, not as task lighting on the desktop and not against a bright window behind you | Read the review |
Our buying decision
Elgato Key Light Panel 35 by 25 centimetres makes sense if you are looking for a studio light panel for face lighting at a distance of 1 to 1.5 metres and for seats further back, have checked the dimensions at the intended spot and will actually use the functions named in the listing. The purchase is less convincing if you expect a universal solution for several conflicting lighting tasks.
Keep looking if key data such as dimensions, light output, IP rating or compatibility is not clearly documented for your intended use. The same applies if you only like the look of the design, but the cable, the floor space or the controls would get in your way in daily use.
We deliberately award no stars. A numerical score would suggest a measurement accuracy that does not exist without documented hands-on testing. The statement this page can support is narrower: which details are available, what the model may be suited for, and which questions remain open before you buy?
Frequently asked questions about the Elgato Key Light
Does the Key Light work without Wi-Fi and without the app?
Only to a limited extent. In its system requirements, Elgato asks for a Wi-Fi-capable device for the initial setup, and the light is then controlled via Control Center, a Stream Deck or the separately available Light Remote. There is no button on the housing itself that would let you change the brightness or colour temperature. Without a network, all that remains is the last saved state and pulling the plug.
How bright is it really on your face?
In this case it can be calculated, because for the model identifier 20GAK9902 Elgato has registered in the EU register a luminous intensity of 858 candela at a beam angle of 111 degrees. By the inverse square law, this gives roughly 3,432 lux at 0.5 metres, 858 lux at 1 metre and 381 lux at 1.5 metres. For the older version with 770 candela, it is 3,080 lux at half a metre. The conversion is our own; the starting values come from the manufacturer's registration.
Is the 2,800 lumens in the listing correct?
Elgato gives the figure in its own technical data, but it does not appear anywhere in the EU product register. There, only 2,400 lumens are registered for the current version 20GAK9902, and 2,600 lumens for the older version 20GAK9901. Plan with the registered values rather than the advertised figure. The difference of 400 lumens is around 14 per cent.
Which energy efficiency class applies, then?
The EU register lists class G for the current device version 20GAK9902, and this can be checked by calculation: 2,400 lumens divided by 32 watts is 75.0 lumens per watt, and because the entry there is a directional light source without a direct mains connection, the regulation applies a further factor of 1.089, giving 81.7 lumens per watt. Class F only begins at 85. Elgato's German product page nevertheless shows a label with class F, whose image file is dated 27 August 2021 and therefore belongs to the older version. Class F is registered for the older version, and it does add up: 2,600 lumens at 34 watts is 76.5 lumens per watt, and because this version is registered as a directional light source on the mains, the factor 1.176 applies, giving 89.9 lumens per watt. The label is therefore not wrong, it simply belongs to the other device.
How can I tell which device generation I will receive?
From the box and from the model number on the back of the light. Elgato has a support article on this: the Key Light MK.I carries 20GAK9901 and comes in a blue box, and the Key Light MK.2 carries 20GAK9902 and comes in a brown box. The listing states neither, and in the shops both are simply called Key Light. In practice they differ in several ways, including Wi-Fi, because only the newer version also supports 5 gigahertz.
Does the Key Light replace a desk lamp?
No, and it is not built to. Elgato registers the light source as directional with a 111 degree beam angle, which is a cone of light on a subject and not even illumination of a work surface. For reading and writing you still need a lamp that lights the desktop without glare. If you want both, plan for two light sources rather than one compromise.
Sources and currency
The sources are ranked by their closeness to the product: manufacturer documents come before retailer or comparison data. A shop listing is useful for the variant currently on offer, but it is not an independent check. Missing documents are not replaced with invented experiences.
- Listing page for ASIN B07L755X9G with all the details the seller gives: 2,800 lumens, 2,900 to 7,000 kelvin, 160 Osram LEDs, opal glass surface and operation via a desktop app over Wi-Fi. The listing names no device generation, no model number, no illuminance, no measuring distance, no colour rendering index and no power consumption. Amazon listing B07L755X9G, not linked
- Elgato's German product page for the Key Light. The Technical data block gives 2,800 lumens adjustable, 2,900 to 7,000 kelvin, colour rendering index above 92 per cent, power consumption of up to 45 watts, dimensions 30 by 350 by 250 millimetres, weight 1.3 kilograms, Master Mount L from 55 to 125 centimetres, clamp up to 60 millimetres, Wi-Fi 2.4 and 5 gigahertz, and energy efficiency F. The comparison table on the same page gives, for the same device, a differing power consumption of up to 25 watts, colour rendering index above 94 per cent and panel dimensions of 350 by 250 by 35 millimetres.
- Elgato Support, technical data for the Key Light MK.2: 2,800 lumens adjustable, 2,900 to 7,000 kelvin, power consumption of up to 45 watts, 350 by 250 by 35 millimetres, weight 1.25 kilograms, Master Mount L from 55 to 125 centimetres with a recommendation of 90 centimetres, padded clamp up to 60 millimetres, Wi-Fi 2.4 and 5 gigahertz to 802.11 a/b/g/n with WPA and WPA2. The scope of delivery lists the light, Master Mount L, power adaptor and quick start guide. A number of LEDs and a colour rendering index are missing from this document.
- Elgato Support, technical data for the Key Light MK.I, expressly marked as legacy and end of life: 2,800 lumens, 2,900 to 7,000 kelvin, up to 45 watts, 160 Osram LEDs, colour rendering index above 94 per cent, dimensions 30 by 350 by 250 millimetres, weight 1.3 kilograms, Wi-Fi 2.4 gigahertz only to 802.11 b/g/n, power adaptor with 100 to 240 volt input and 13 volts direct current at 4 amperes output. The 160 Osram LEDs named in the listing appear solely in this document for the old device generation.
- Elgato Support, guide to telling the two device versions apart. The Key Light MK.I carries model number 20GAK9901 and comes in a blue box, the Key Light MK.2 carries 20GAK9902 and comes in a brown box. In the shops both are simply called Key Light. According to Elgato's own information, the difference can only be recognised from the box colour and from the model number on the back of the light.
- Elgato Support, system requirements for the Key Light MK.2. A Wi-Fi-capable PC, Mac or an iOS or Android device is required for the initial setup, plus 64-bit Windows 10 or macOS 10.14 and later. Control Center, Stream Deck and the separately available Light Remote are named as ways to operate it. Controls on the device itself do not appear in the list.
- Elgato Support on pairing: to connect the Key Light to a network, a Windows, macOS or iOS device with Wi-Fi is required. Pairing is done once, after which the light stays on the network. It is controlled via the Control Center software for macOS or Windows. Operation without this software and without a network is not provided for in the document.
- Elgato Support, quick start guide for the Key Light MK.I. It describes four mounting threads on the four edges of the panel, screwing it onto the telescopic pole, the note that the pole wobbles at full extension, tightening the table clamp and only then connecting the power adaptor. Pairing to Wi-Fi is described as a separate step after assembly.
- EU product register EPREL, registration 1558900 of the trade mark elgato, model identifier 20GAK9902 Key Light, entered via Corsair Memory B.V. in Almere as authorised representative. Registered are 2,400 lumens at 32 watts power consumption, energy efficiency class G, colour rendering index 95 with R9 equal to 80, a single colour temperature of 4,500 kelvin, a directional light source with a 111 degree beam angle and a luminous intensity of 858 candela, dimensions 40 by 350 by 250 millimetres, networked standby power of 0.24 watts, placed on the market from 3 July 2023.
- EU product register EPREL, registration 731810 of the same trade mark, model identifier 20GAK9901, that is the older device version. Registered are 2,600 lumens at 34 watts, energy efficiency class F, colour rendering index 88 with R9 equal to 37, 3,000 to 6,500 kelvin, 111 degree beam angle at 770 candela, dimensions 18 by 250 by 350 millimetres, placed on the market from 25 August 2021 to 1 September 2026. The same brand therefore registers 2,600 lumens for one device and 2,400 lumens for another of the same name.
- licht.de on the energy efficiency classes of light sources that have applied since 1 September 2021, with the class limits of luminous efficacy: A from 210 lumens per watt, B from 185 to 209, C from 160 to 184, D from 135 to 159, E from 110 to 134, F from 85 to 109 and G below 85 lumens per watt.
- German Environment Agency (UBA, in German) on energy consumption labelling of lamps and luminaires under Regulation (EU) 2019/2015, which since 1 September 2021 has set the classification from A to G for light sources and stands behind every class shown on a listing page.
- Amazon product listing B07L755X9G; product data via the Creators API, retrieved 27 August 2026 Advertisement
Content checked on 27 August 2026. Prices, availability and product variants can change independently of this page. For the final check, always use the current retailer listing and any available manufacturer documents.
If a linked source is no longer reachable, or the model on offer visibly differs from the product image and designation, this analysis is no longer the right basis for a decision. In that case the current model number is what counts. Tell us about the difference via the contact page (in German), so that the data, the link and the recommendation can be checked.
