Disclosure: This post contains affiliate links. We may earn a commission if you make a purchase through these links—at no extra cost to you.
Published: 13 May 2025
Also featured in: Top 5 Energy-Saving Smart Light Bulbs
Overview
The Refoss Smart Light Bulb B22 Bayonet WiFi LED Bulb brings multi-platform compatibility, voice control, and full-colour flexibility to UK homes at a wallet-friendly price. It works with Apple HomeKit, Amazon Alexa, Google Assistant, and SmartThings, delivering RGB colour, dimmable warm and cool whites, and app-based automation — all without requiring a hub.
Ideal for homeowners looking for versatile smart lighting with native B22 support, Refoss blends ease-of-use with feature-rich performance, making it a strong contender among 2025’s best-value smart bulbs.
Key Features
- ✅ B22 bayonet cap – no adapters needed for UK sockets
- ✅ RGB + tunable white (2700K–6500K)
- ✅ Works with Apple HomeKit, Alexa, Google Assistant, SmartThings
- ✅ Control via voice, remote app, or automation
- ✅ Wi-Fi connectivity (2.4GHz) – no hub required
- ✅ 9W power usage (equiv. 60W), 806 lumens brightness
With both colour and temperature control, the Refoss bulb lets you set the mood for any occasion — from energising daylight to calming warm tones or dynamic party colours.
Performance in Real-World Use
Setup is quick and straightforward. Apple users can pair instantly via HomeKit QR code scanning, while Android and Alexa/Google users can link through the Refoss or Smart Life app. The bulb connects directly over Wi-Fi, so there’s no need for a hub or bridge.
In use, voice commands via Alexa or Siri work flawlessly. You can turn the bulb on/off, adjust brightness, change colours, or switch between white temperatures. The colour range is broad and vivid, with accurate tones across the RGB spectrum. Whites are bright and natural, and dimming is smooth and flicker-free.
The Refoss app allows users to set schedules, timers, scenes, and automation triggers — whether based on time, sunset/sunrise, or device interaction. It also supports grouping with other bulbs for unified control.
Use Cases in UK Homes
- 🌈 Living Room: Set the colour to match your mood or movie night ambiance.
- 🛏️ Bedroom: Schedule a gradual dim for wind-down lighting at night.
- ☀️ Home Office: Use cooler tones in the morning and warmer light in the evening.
- 🎤 Hands-Free Control: Command your lights using Siri, Alexa, or Google Assistant.
- 🏠 Remote Management: Turn on/off lights from your smartphone, wherever you are.
How It Compares
- 🆚 vs. Meross Bulb: Both offer full platform support; Refoss adds RGB colours at similar price.
- 🆚 vs. Tapo L510B: Tapo is cheaper but lacks colour and platform diversity.
- 🆚 vs. Philips Hue: Hue offers better app experience, but Refoss works out-of-the-box without a hub.
- 🆚 vs. Sengled: Refoss supports more platforms and offers greater flexibility with B22 fitting.
It’s one of the best-featured bulbs at this price range — especially for UK households using the bayonet B22 standard.
Pros
- Full-colour RGB + tunable white lighting
- HomeKit, Alexa, Google, and SmartThings compatibility
- No hub required – easy Wi-Fi setup
- True B22 socket support for UK homes
- Smooth dimming and scene options
Cons
- 2.4GHz Wi-Fi only (not dual-band)
- Occasional delay in app-based colour changes
- No energy monitoring features
Final Verdict
The Refoss Smart Light Bulb B22 offers superb value for money, bringing advanced smart lighting features — including full-colour control and cross-platform voice support — to UK homes without needing any extra equipment. The native B22 fitting, HomeKit support, and versatile app make it especially attractive for households looking to integrate affordable smart lighting quickly and effectively.
While it doesn’t include energy tracking or Matter support, it hits all the right notes for functionality, ease of use, and compatibility in 2025.
★★★★☆ (4.7/5)