Sonoff B1 User Guide

Hi,  welcome to use Sonoff B1 Dimmable White & Color LED Bulb! Let’s get started using it.

1. Download “eWeLink” app

Search “eWeLink” in APP Store for iOS version or Google play for Android version.

2. Installation

Screw the bulb into the E27 base.

3. Add device

1. Power up. (The bulb maybe not light up, take it easy. It will be light up after added)

2. Enter into pairing status: Turn off and on for 3 times (OFF–>ON–>OFF–>ON–>OFF–>ON), the time interval is 2s. Then the bulb will start breathing.

3. Add to your account

Open eWeLink, tap “+” to add it.

For Android user, please select the first icon and click NEXT.

For iOS user, if your app version is 2.4.0 or higher, please select the first icon, if your app version is lower than 2.4.0, please select the second icon, then click next.

EWeLink will auto-search and connect to the device.

4. Input your home SSID & password:

4.1 If no password, keep it blank.

4.2 Now eWeLink only support 2.4G WiFi communication protocol, 5G-WiFi is not supported.

5. Name the device to complete.

6. Maybe the device is “Offline” on eWeLink, for the device needs 1-2 minutes to connect to your router and server.

4. APP features

3.1 WiFi remote control and synchronous status

Turn on/off by tapping device icon on App. Device status always simultaneously display on APP.

3.2 White Ambiance

Tap on “White”, the light is white. Here, you can set brightness from 1% to 100% and color temperature from cold to warm.

3.3 Color Ambiance

Tap “Color”, you will see the spectrum. Tap and slide the button to adjust the color to your favourite one.

3.4 Lighting Scene

Tap “Scene”, you can see there are 4 available scenes: rest, reading, party and casual. In Rest scene, it is a few dimly lit for having a nap or sleep. The Reading scene is fine light to protect your eyes from reading. The Party scene light is colored. While Casual scene is great for having a small talk and a cup of tea.

3.5 Share Control


The owner can share the devices to other eWeLink accounts. While sharing devices, both should stay online on eWeLink (keep the screen lighten). Because if the account you want to share is not online, he/she will not receive the invitation message.

How to make it possible? Firstly click Share, input the eWeLink account (phone number or email address) you want to share, tick the timer permissions (edit/delete/change/enable) you want to give, then click Next. The other account will receive an invitation message. Click Accept, the device has shared successfully. The other user will have access to control the device.

3.6 Timing schedules


Support max 8 enabled single/repeat/countdown timing schedules each device.

3.7 Scene/Smart Scene

Scene allows triggering on/off your devices automatically. Scene Settings is in the upper right corner of Device List. You can set up scenes or smart scenes to trigger on/off the device.

Users should select “Click to execute” in the condition, add different existing devices, name the scene and save it.

3.8 Set default device status


In Device Setting, you can set default device status to ON or OFF when the device is powered on.

3.9 Security mechanism

One device one owner. Other people can not add the devices that have already been added. If you want to add your device to another account, don’t forget to delete it first.

3.10 Update

It will auto-remind you of new firmware or version. Please update as soon as you can.

5. Problems and solutions

Read the detailed FAQ  on Itead Smart Home Forum. If below answers can’t solve your problem, please submit a feedback on eWeLink.

1. My device has added successfully but stays “Offline”.

Answers: The newly added device need 1-2 min to connect to your router and the Internet. If it stays offline for a long time, please judge the problem by the green led status:

1. The reason may be you have entered wrong WiFi password or your device is too far away from the router, which causes a weak WiFi signal. The device can not be added to the 5G-wifi-router, only the 2.4G-wifi is OK. At last, make sure that your router is MAC-open.

2. Why the APP can’t find the device in pairing status?

Answers: That’s because of your phone’s cache. Please close the WLAN of your phone then open it after a minute. At the same time, please power off the device if you can, then power up to try again.

3. My WiFi is expired, can I connect the devices to LAN?

Answers: the Sonoff B1 doesn’t support to be controlled by LAN. You’ll need to connect it to a WiFi with normal Internet.