Shelly Duo Bulb E27 Gen3

The Shelly Duo Bulb E27 Gen3 is a smart Wi-Fi & Bluetooth bulb with adjustable, dimmable warm to cool white tones (2700K - 6500K) with power metering and gateway/range extension features. Create the perfect atmosphere, set schedules, and enjoy energy-efficient comfort.

Set it up easily over Wi-Fi or Bluetooth and take full control of your lighting. Enjoy tuneable white light, from warm and cosy to bright and cool. Schedule routines, dim the brightness to your preference, and monitor energy use for a more efficient and comfortable home. Control it from your wall switch, phone or your favourite home automation system, including Home Assistant!

The bulb offers two additional advanced features:

• Wi-Fi range extender: when enabled, the device retransmits the Wi-Fi signal to extend its reach, allowing other Shelly devices to connect to it.
• BLE Gateway: facilitates communication between BLE and Wi-Fi-enabled devices, such as Shelly BLU devices.

Other key features include:

• Automate your everyday lighting - save time by letting Shelly Duo adjust your lights automatically throughout the day.
• Control it your way - use the Shelly Smart Control app, a switch, the web interface, or third-party platforms for instant access.
• Track and save energy - monitor real-time power consumption and optimise your usage.
• Enjoy hub-free operation - connect directly over Wi-Fi and Bluetooth. No hub or extra hardware needed.
• Personalise every detail - create custom automations with advanced scripting, webhooks, and local scenes.
• Set the perfect white light - choose your ideal colour temperature - from soft warm tones to crisp cool whites.

Nighttime path lighting

Waking up in the middle of the night no longer means harsh, blinding lights. With the customisable Night Mode enabled, the bulb softly lights your way toward hallways, kitchens, or bathrooms at your chosen brightness and colour temperature. Paired with a Shelly BLU Motion sensor, it switches on automatically as you pass, ensuring hands-free comfort and safety while the rest of the house stays calm and undisturbed.

Cosy ambiance for every occasion

Set the perfect mood for any moment with Shelly Duo’s tuneable white light. Adjust from warm candlelight tones for intimate dinners to crisp, cool whites for reading or socialising. Create a cosy or uplifting atmosphere with just the right shade of white.

Presence-based welcome lighting

Experience a warm welcome every time you come home. When paired with a Shelly BLU Motion, the bulb turns on in your preferred bright, cool white light. It then transitions to a softer warm white before turning off when no movement is present. Both brightness and colour temperature are fully customisable within the white light range to fit your comfort.

Light that follows your day

Let your home follow the rhythm of the day. Shelly Duo automatically adjusts its light to match the natural flow of sunlight - bright, cool whites that lift your energy in the morning and soft, warm tones that invite you to slow down at night. Enjoy lighting that gently supports your daily rhythm and helps you feel balanced from dawn to dusk.

Light that makes your home always feel alive

Shelly Duo automatically mimics your daily routines with subtle on/off lighting patterns, giving your home a natural, lived-in look while you’re away. The schedule runs locally for reliable performance and keeps precise timing through periodic clock synchronisation with the server.

Features

• Wi-Fi & Bluetooth Connectivity with Wi-Fi Range Extender and BLE Gateway
• Tuneable white lighting (8.5W, 800lm)
• Dimmable: smoothly dim or brighten the bulb from the Shelly app, voice assistants, or compatible smart home systems. Physical wall dimmers are not supported and may cause flicker or malfunction.
• Night Mode: Pre-set brightness and colour temperature when the light turns on at night
• Activity Log: detailed device history
• Power Measurement: real-time power consumption in watts
• Custom Scripting for advanced automation scenarios
• Basic and Advanced Schedules: weekly routine settings, or detailed configuration
• Dynamic Components (Virtual & BTHome): User-created components added dynamically to the device
• Local Actions: automation within the local network
• No Hub Required: via Shelly app or third-party systems
• Compatible with a wide range of smart home automation platforms, including Home Assistant

Specifications

Size (HxW)	A60 (60 x 110 mm)
Weight	34g
Socket	E27
Dimming	Yes
Brightness	Up to 806 lm
Colour temperature	2700 K - 6500 K
Beam angle	200°
Filament	LED SMT
Glass/Coating	PC frost cover
Protection class	IP20
Lifetime	15000 hours
Ambient working temperature	-25 °C to +40 °C
Humidity	30% to 70% RH
Max. altitude	2000m
Power supply	220-240 V~ 50/60 Hz
Power consumption	8.5 W
Device power consumption	< 0.5 W, when only Bluetooth is enabled < 1 W, when Wi-Fi and/or Access Point is enabled
Internal-temperature sensor	No
Power measurement	Yes
Wi-Fi
Protocol	802.11 b/g/n
RF band	2401 - 2483 MHz
Max. RF power	< 20 dBm
Range	Up to 50m outdoors, up to 30m indoors (depending on local conditions)
Bluetooth
Protocol	4.2 (BLE)
RF band	2402 - 2480 MHz
Max. RF power	< 4 dBm or < 20 dBm
Range	Up to 30m outdoors, up to 10m indoors (depending on local conditions)
Microcontroller unit
CPU	Shelly ESP C3
Clock frequency	40 MHz
RAM	400 KB
Flash	8 MB
Firmware capabilities
Schedules	20
Webhooks (URL actions)	20 with 5 URLs per hook
Scripting	Yes
MQTT	Yes

Resources

• Shelly Product Documentation
• Printed User Guide (as found within the package)
• Components and APIs
• Declaration of Conformity
• Device Identification
  • Device name: Shelly Duo Bulb E27 Gen3
  • Device model: S3BL-D010009AEU
  • Device SSID: ShellyDuoBulbG3-XXXXXXXXXXXX
  • Device Bluetooth ID: 0x1814
• EAN: 3800238073190

Handy Shelly Resources

• Shelly Cloud
• Shelly App
  • Apple App Store
  • Google Play
  • Huawei AppGallery
• Home Assistant Shelly Integration
• Shelly Community Forum
• Shelly Facebook Support Group
• Shelly Knowledgebase
• Shelly Device Finder (easy-to-use software to find Shelly devices in the local network)
• Shelly Developer API

Package Contents

• 1x Shelly Duo Bulb E27 Gen3