How to Configure WiFi Devices?
Guide to Quick Pairing and Fault Finding
To Identify Different States of a Sonoff Device - Monitor BLUE LED:
Quick Pairing Mode
(3 Blinks per cycle)
Compatible Pairing Mode
No WiFi Connection
(Single Blink per cycle)
No Server Connection
(Two Blinks per cycle)
(Rapid 3 Blinks per cycle)
(Continuous Glow - BLUE)
(Continuous Glow - Violet)
Configuring a New Device for the First Time
Warning - Electrical Hazard - Take Safety Precautions:
Since the device is powered up from a 230 Volts ac mains, it could be hazardous and there is a chance of getting an electrical shock. Hence, take safety precautions and when in doubt, ensure that the electrical connections are made by a qualified technician.
Confirm that the 230 Volts ac mains input - Phase (L in) and Neutral (N in) wires and the Load (L out) are connected to the correct terminals of a new device before powering it up for the first time.
Do NOT apply 230 Volts ac mains input to Low Voltage (3 Volts) terminals such as S1 or S2! On doing so, device will short-circuit and there could be a danger to life and property!
Switch the Device into Quick Pairing Mode
When a new device is powered on for the first time, it will be in the 'No WiFi Connection' state or the 'Quick Pairing Mode' state depending on the firmware of the device. If your device is in the 'No WiFi Connection' state, keep your finger touching the 'Touch Switch Plate' continuously for 5 seconds and then lift your finger to enter the 'Quick Pairing Mode'. If your device model does not have the touch feature, long press the pairing button for 5 seconds and then release. Study the blink pattern of 'Quick Pairing Mode' from the Figure (GIF) provided above and confirm that your device has entered this quick pairing mode.
Press the button once or touch the plate momentarily for the device to quit the pairing mode.
If the device is not paired, it will automatically quit pairing mode after 3 minutes.
Pairing Instructions - to add Device in eWeLink
Launch the eWeLink APP on a mobile phone.
Click the ”+” icon located near the bottom of the screen.
Select “Quick Pairing” to add the device.
Choose the WiFi network with which you wish to connect the device.
User Tips: Before choosing the WiFi network, ensure that location services are turned ON and that location permission is given.
Enter the correct WiFi password and click “Next”.
Wait for eWeLink to search for the device. When eWeLink finds the device, it passes on the WiFi credentials using which the device pairs with the WiFi network.
Name the device and group it. You have now successfully paired the device, and it is ready for operation from the eWeLink App.
The device only works with 2.4GHz WiFi.
If the router is working in dual-band (2.4GHz & 5GHz), please upgrade the eWeLink app to V4.0.0 or above.
The Pairing will fail if a wrong WiFi password is input.
Bring the device closer to router for a better signal transmission while pairing.
The device only works with 2.4GHz WiFi. If your WiFi network is dual bands (2.4GHz & 5GHz), it will cause the pairing to fail. so turn off the 5GHz band while pairing.
Having Difficulties while Pairing?
It is common for a new user or a fresh beginner to face difficulties while pairing smart devices for the first time. The devices may fail to pair or continue to stay offline. Please take a moment to understand the different states that the Sonoff devices could be in and carefully observe the blink pattern of the Multi-colour LED Indicator. When powered up, the device could be in 7 different states
- Quick Pairing Mode (Touch)
When the device is in Quick Pairing Mode, it is ready to proceed with the pairing process. Follow closely the pairing instructions given above to add the device using eWeLink
The Quick Pairing Mode is the most common used pairing mode.
When the device is powered on, it will either be in “No WiFi Connection” status or “Quick Pairing Mode” depending on the firmware of the device.
If the device is new and not connected to WiFi router yet, long press the touch switch or pairing button for 5 sec and then release to enter the Quick Pairing Mode. To quit the Quick Pairing Mode, press the pairing button momentarily and then release.
- Compatible Pairing Mode (AP)
When the device is in Compatible Pairing Mode it acts as an Access Point (AP). This is the first generation pairing mode. In iOS, the Compatible Paring Mode procedure is more complicated than Quick Pairing Mode. We recommend that you use Quick Pairing Mode during the first pairing attempt.
To enter Compatible Pairing (AP) mode, first enter the Quick Pairing Mode using instructions given above. Once your device enters the 'Quick Pairing Mode' state, you need to once again repeat the process by keeping your finger touching the 'Touch Switch Plate' continuously for 5 seconds for the second time and then lifting your finger to enter the 'Compatible Pairing Mode'. If your device model does not have the touch feature, long press the pairing button for 5 seconds for the second time and then release. Study the continuous blink pattern of 'Compatible Pairing Mode' from the Figure (GIF) provided above and confirm that your device has entered this compatible pairing mode.
When the device is in the Compatible Pairing Mode, it is ready to proceed with the pairing process. Follow closely the pairing instructions given above to add the device using the eWeLink App.
To quit the Compatible Pairing Mode, please press the touch switch or pairing button momentarily once and then release.
- No WiFi Connection State
In this state, the device is not connected to WiFi router. This could be due to one of the following two reasons:
A new device fresh from a box is yet to be paired. Hence, when a new device is powered on for the first time, it will be in the 'No WiFi Connection' state or the 'Quick Pairing Mode' state depending on the firmware of the device. To pair the device to the router using the eWeLink App, follow closely the pairing instructions given above.
The device had been paired earlier using the eWeLink App, but now it has failed to connect to the router. In such a case, the device icon on the eWeLink App would display 'offline'. A “No WiFi Connection ” state could be reached due to:
Inputting a wrong Wi-Fi SSID or password.
Lower carrying capacity of the router.
The weak Wi-Fi signal of the device.
The MAC of the device is in the black list of your MAC management, or, the device MAC is filtered by router MAC management.
There are too many devices connect to your router which exceeded router capacity
4. No Server Connection State
When the device has been connected to the router successfully, but fails to connect to the server of eWeLink, the device enters the 'No Server Connection' state. On the eWeLink application, the device icon shows 'offline'.
Procedure to shift the device out of the 'No Server Connection' state:
Check if the WiFi network can access the Internet or or the eWeLink server.
Contact your Internet Service Provider (ISP) and confirm that eWeLink server address is not denied or blocked by the network provider.
Note the server addresses : as-disp.coolkit.cc (in Asia except China); cn-disp.coolkit.cc (China Mainland);
eu-disp.coolkit.cc (in EU); us-disp.coolkit.cc (in US).
5. Upgrading State
The LED indicator displays the 'Upgrading' state when the device is upgrading its own firmware. Please wait for a while to allow the firmware upgrade to complete. The eWeLink App will notify on completion of completion of the upgrade.
6. Normal Operation - Switch OFF
In the 'Normal Operation - Switch OFF' state, the multi-colour LED indicator remains ON continuously (does not blink) and emits BLUE light. This state indicates that the device has been paired (successfully connected to the WiFi router and the eWeLink server) using the eWeLink App. When the multicolour LED emits BLUE colour, it also indicates that the Device Switch is OFF.
7. Normal Operation - Switch ON
In the 'Normal Operation - Switch ON' state, the multi-colour LED indicator remains ON emitting VIOLET light continuously without any blinks. This state indicates that the device has been paired (successfully connected to the WiFi router and the eWeLink server) using the eWeLink App. The VIOLET (RED + BLUE) colour of the multicolour LED indicates that the Device Switch is ON.