Kasa Smart

Kasa Smart Light Bulbs Full Color Changing Dimmable Smart WiFi Bulbs Compatible with Alexa and Google Home A19

495+ bought in the past month

$25.58$31.99

About this item

  • Multicolor & Auto White: Dimmable 16 million colors and warm to cool whites(2500K-6500K). Set your bulb to automatically adjust its color temperature to match natural light patterns from dawn to dusk. Explore endless lighting possibilities to create your favorite light effects for everything from a dinner party to a late-night study session. Great for holiday decorations.Voice Control: Get hands-free control of your lights with your voice via Amazon Alexa or Google Assistant. Perfect for times when your hands are full or entering a dark room.
  • Drive down energy consumption without losing quality (60 W equivalent). Use timer or schedules to set your lights to automatically turn on and off whenever you want, such as waking up with a soft glow in the morning with sunrise offset.Trusted & Reliable: Kasa is trusted by over 6 Million users. UL certified for safety use. 2-year warranty. Require 2.4GHz Wi-Fi network connection. Operating Humidity 10%~90%RH, Non-condensing
  • Remote Control: Control your smart light bulb from anywhere with your smartphone using the free Kasa smart app (iOS, Android); Dim, turn on or off or change the colors of your light bulb remotely at your fingertips.Energy Monitoring & Scheduling: Monitor real-time energy usage. Wifi Protocol IEEE 802.11b/g/n. Operating Temperature -15 ºC~ 40 ºC (5°F ~ 104°F )
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Product details

BrandKasa Smart
Light TypeLED
Special FeatureAuto White, Dimmable, Energy Monitoring, Tunable
Wattage9 watts
Bulb Shape SizeA19

Technical specifications

brandKasa Smart
light_typeLED
special_featureAuto White, Dimmable, Energy Monitoring, Tunable
wattage9 Watts
bulb_shape_sizeA19
bulb_baseE26
incandescent_equivalent_wattage60 Watts
specific_uses_for_productAppliance
light_colorRGB
voltage120 Volts
unit_count1 Count
color_temperature6500 Kelvin
number_of_items1
brightness800 Lumen
shapea19
materialPlastic
model_nameKL125P4
indooroutdoor_usageIndoor
power_sourceCorded Electric
color_rendering_index80
power_consumption60 Watts
item_package_quantity1
light_source_typeLED
specification_metul_listed
item_weight9.9 ounces
light_source_wattage9 Watts
product_dimensions2.36"W x 4.52"H
accepted_voltage_frequency100 to 120 Volts and 60 Hertz
bulb_diameter2.36 Inches
control_methodVoice
white_brightness800 Lumens
efficiencyhigh
style800 Lumens, 4-Pack
manufacturerTP-Link
smart_home_compatibilitySmart Home Compatible
colorMulticolor
upc840030702396
light_output_maximum800 Lumens
part_numberKL125P4
item_model_numberKL125P4
included_components4x Kasa Smart Light Bulb Multicolor, 1x Quick Installation Guide
special_featuresAuto White, Dimmable, Energy Monitoring, Tunable
batteries_includedNo
batteries_requiredNo
best_sellers_rank#617 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #45 in LED Bulbs
date_first_availableJanuary 21, 2021

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Customer reviews

4.521,962 ratings

Customers say

Customers find the smart light bulbs easy to set up and appreciate their quality, color variety, and brightness levels, with the ability to dim from the app.

★★★★★

Changed My Whole Living Room Mood with My Phone - Colors Are Vibrant and Alexa Control is Seamless

SJanuary 31, 2026✓ Verified purchase

I had regular dumb bulbs in my living room and was getting tired of the same boring white light all the time. I'd been curious about smart bulbs for a while but didn't want to spend a fortune. These Kasa bulbs were reasonably priced and had good reviews so I grabbed a 4-pack to do my main living room lamps. Setup was super easy. Downloaded the Kasa app, screwed the bulbs into my lamps, opened the app and it found them right away. Took maybe 5 minutes to get all four bulbs connected to my WiFi and named properly. Way easier than I expected - no complicated pairing process or technical nonsense. I've got these bulbs in my four living room lamps - two floor lamps in the corners and two table lamps on end tables. Being able to control all of them from my phone is so convenient. I can turn them on from bed before I get up in the morning, or turn them off from the couch without getting up. Small thing but it's one of those quality of life improvements you don't realize you wanted until you have it. The color changing is what really makes these worth it. I can set them to warm white for a cozy evening vibe, bright white when I'm cleaning or need good visibility, or pick from like 16 million colors for whatever mood I want. I do deep red lighting when watching horror movies, blue-green for a chill vibe, warm orange for dinner parties. It completely changes the atmosphere of the room. I integrated them with my Alexa and voice control works perfectly. "Alexa, turn living room lights to 50%" or "Alexa, make the lights purple" and it just works. Super useful when my hands are full or I'm cooking in the kitchen and want to adjust the living room lighting without stopping what I'm doing. The scheduling feature is clutch. I've got them set to turn on at sunset automatically and turn off at 11pm. Also have them gradually brighten in the morning to help me wake up more naturally instead of being shocked awake by an alarm. It's like having daylight that follows my schedule. The brightness is legit. These are 1000 lumens which is plenty for my living room. I usually run them at like 70-80% brightness and that's more than enough light. When I crank them to 100% the room is super bright - good for cleaning or when I need to find something I dropped behind the couch. I set up different scenes for different occasions. Movie Night scene dims everything to 20% with warm white. Party Mode cycles through colors. Reading Mode is bright white at 100%. Chill Evening is warm orange at 40%. Having presets means I don't have to fiddle with settings every time, just hit the scene I want and done. The color accuracy is really good. When I set them to red they're actually red, not some washed out pink. Blue is deep blue, green is vibrant green. The colors are saturated and look how you'd expect them to look. Makes them great for holidays - red and green for Christmas, orange for Halloween, whatever. I've used the away mode feature when traveling. Sets the lights to turn on and off at random times to make it look like someone's home. Good for security and peace of mind when I'm gone for a few days. Beats leaving lights on 24/7 and wasting electricity. The energy monitoring in the app is interesting. Shows me how much energy each bulb is using. These are LEDs so they're way more efficient than the old incandescent bulbs I had before. My electric bill has actually gone down a bit even though I'm using the lights more because they're fun to play with now. They work great with my Google Home too. I can control them from my phone, Alexa, or Google Assistant depending on which device is closest. The integration with both ecosystems means I'm not locked into one platform. The grouping feature is useful. I've got all four living room bulbs in a "Living Room" group so I can control them all at once, but I can also control them individually if I want. Like if I just want the floor lamps on but not the table lamps, I can do that. I've added these to routines too. Morning routine turns them on gradually, evening routine dims them down. When my Alexa alarm goes off, the lights start brightening. When I say "Alexa, goodnight" everything turns off including the lights. Makes my smart home feel actually smart and not just a collection of disconnected gadgets. The bulbs don't make any noise which some smart bulbs apparently do. No humming, no buzzing, just quiet operation. The light quality is consistent too - no flickering or weird color shifts. They stay connected to WiFi reliably. I've had other smart home stuff that constantly drops connection and needs resetting. These Kasa bulbs just work. They've stayed connected since I installed them months ago without any issues. My friends have been impressed when they come over. Being able to change the whole vibe of the room by telling Alexa to switch colors is a neat party trick. Plus having presets for different activities makes the space feel more intentional and designed. For the price these are a great way to get into smart lighting without spending a fortune. They do everything the expensive Philips Hue bulbs do but cost way less. If you want to try smart bulbs or add some personality to your lighting, these are perfect. Read more

★★★★★

Straightforward Smart Bulbs With Dimming and Color Control

Butch JJanuary 27, 2026✓ Verified purchase

I’ve been using these Kasa smart bulbs mainly for the dimming, and that part works exactly how I want it to. Adjusting brightness is smooth and makes everyday lighting more comfortable than a simple on/off setup. They also let you change the light color, which is available right in the app without any extra steps. Setup was easy, and they’ve been consistent in normal daily use. Overall, they feel like dependable smart bulbs that do what they’re supposed to do. . What you may care about: • Can you dim lights smoothly instead of just turning them on or off? (Meets) • Is changing the light color an available option? (Meets) • Do they work reliably for everyday use? (Meets) • Are they easy to set up and manage? (Meets) Read more

★★★★★

The Best Smart Bulbs Around, No Hub Required!

JonJanuary 6, 2026✓ Verified purchase

These have an amazing range of vibrant colors to choose from, including the full range of white lighting options to match whatever pre-existing bulb temperature rating you have in your house! Also, they are BRIGHT! The setup is a breeze with the Kasa app and creating schedules or grouping devices together to function in sync is a snap! We have an older set of these that are going strong indoors for about 5 years now. Our newest set is used outdoors in covered fixtures and has been exposed to freezing weather without fail. Response times for on/off functionality or color changes are immediate and we've had no down time with our wifi connectivity to these devices. There's been no phasing out of cross compatibility from our old bulbs to our new set. We sync the bulbs together or use them separate without fail and they function as intended every time! Read more

★★★★☆

Good, but some connectivity issues

SaraMarch 24, 2024✓ Verified purchase

The Kasa Smart Light Bulbs offer a convenient and customizable lighting solution with their full color-changing and dimmable features, compatible with Alexa and Google Home. However, while they have their merits, their reliability in staying connected to the internet leaves something to be desired. On the positive side, these bulbs provide a wide range of colors and brightness levels, allowing for personalized lighting to suit any mood or occasion. The integration with popular smart home assistants like Alexa and Google Home adds to their versatility, enabling convenient voice control for seamless operation. That said, the inconsistency in maintaining a stable internet connection can be frustrating and impacts their overall usability. There are occasions when the bulbs fail to connect or become disconnected from the network, disrupting the intended lighting settings and requiring manual intervention to reestablish connectivity. Often just one will disconnect, meaning I can’t control them both at the same time. Other times, both disconnect. While the lack of a required hub simplifies the setup process, it seems that the reliance solely on a 2.4GHz Wi-Fi network may contribute to the connectivity issues experienced by some users. It's worth noting that in environments with multiple smart devices or interference, these issues may be exacerbated. In conclusion, the Kasa Smart Light Bulbs offer a decent lighting solution with their color-changing and dimmable capabilities, enhanced by compatibility with popular smart home platforms. However, the inconsistency in internet connectivity detracts from their overall reliability and usability. For users seeking a seamless smart lighting experience, it may be worth exploring alternative options with more robust connectivity features. Read more

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