Sonoff Wi-Fi Smart Wall Switch
User manual V1.2
Models: T0/T1, T2/T3
Wi-Fi Smart Wall Switch
Operating Instruction
1. Power off
[Diagram: Hand turning a switch from ON to OFF]
⚠️ To avoid electric shocks, please consult the dealer or a qualified professional for help when installing and repairing!
2. Wiring instruction
Light fixture wiring instruction:
[Diagram: Wiring for light fixture. 100-240V AC L connects to L In, N connects to N In. LOut terminals connect to light fixture live wires.]
Connections:
- Neutral input (N In)
- Live input (L In)
- Live output (L Out)
Appliance wiring instruction:
[Diagram: Wiring for appliance. 100-240V AC L connects to L In, N connects to N In. LOut terminals connect to appliance live wires.]
! Make sure the neutral wire and live wire connection is correct.
3. Download APP
Download the eWeLink app:
[App Store] Download on the App Store
[Google Play] GET IT ON Google Play
[QR code for eWeLink app]
4. Power on
[Diagram: Front view of the smart wall switch with three touch buttons.]
After powering on, the device enters quick pairing mode (Touch) during the first use. The Wi-Fi LED indicator changes in a cycle of two short and one long flash and release.
The device exits quick pairing mode if not paired within 3 minutes. To re-enter this mode, long press any configuration button for about 5 seconds until the Wi-Fi LED indicator changes in a cycle of two short and one long flash and release.
5. Add the device
[Diagram: Mobile phone screen showing 'Add Device' and 'Quick Pairing' options.]
Tap "+" and select "Quick Pairing", then operate following the prompt on the APP.
Compatible Pairing Mode
If Quick Pairing Mode (Touch) fails, try "Compatible Pairing Mode":
- Long press the Pairing button for 5s until the Wi-Fi LED indicator changes from two short flashes and one long flash to quick flashes. The device enters Compatible Pairing Mode.
- Tap "+" and select "Compatible Pairing Mode" on the APP. Select Wi-Fi SSID with ITEAD-******, enter password 12345678, go back to eWeLink APP, and tap "Next". Wait for pairing to complete.
RF Remote Controller Pairing
The switch supports 433MHz RF remote controllers for local short-range wireless control (on/off, channel learning).
Pairing Method: Long press the touch button for 3s until a "beep" sound is heard. Then, press the corresponding button on the RF remote controller. A second "beep" confirms successful pairing. Repeat for other buttons.
Clearing Method: Long press the touch button for 5s until two "beep" sounds are heard. Then, press the corresponding button on the RF remote controller. A "beep" confirms successful clearing. Repeat for other buttons.
Specifications
| Model | Specifications |
|---|---|
| Model | T0EU1C/T0EU2C/T0EU3C T1EU1C/T1EU2C/T1EU3C T2EU1C/T2EU2C/T2EU3C T3EU1C/T3EU2C/T3EU3C |
| Max. input | T0/T1/T2/T3 (EU1C): 100-240V AC 50/60Hz 2A T0/T1/T2/T3 (EU2C): 100-240V AC 50/60Hz 4A T0/T1/T2/T3 (EU3C): 100-240V AC 50/60Hz 3A |
| Max. output | T0/T1/T2/T3 (EU1C): 100-240V AC 50/60Hz 2A T0/T1/T2/T3 (EU1C): 100-240V AC 50/60Hz 2A/Gang, 4A/Total T0/T1/T2/T3 (EU1C): 100-240V AC 50/60Hz 1A/Gang, 3A/Total |
| LED load | T0/T1/T2/T3 (EU1C/EU2C): 150W/110V (per channel), 300W/220V (per channel) T0/T1/T2/T3 (EU3C): 60W/110V (per channel), 100W/220V (per channel) |
| Wi-Fi | IEEE 802.11 b/g/n 2.4GHz |
| RF | 433.92MHz |
| Operating systems | Android & iOS |
| Materials | PC + tempered glass panel |
| Dimension | 86x86x35mm |
ℹ️ T0(EU1C/EU2C/EU3C) does not support the remote controller with 433.92MHz.
Product Introduction
[Diagram: Smart switch components showing tempered glass panel, three touch buttons (Pairing, Touch, On/Off LED indicator), and Wi-Fi LED Indicator (Blue).]
ℹ️ The device weight is less than 1 kg. The installation height of less than 2 m is recommended.
Wi-Fi LED indicator status instruction
| Wi-Fi LED indicator status | Status instruction |
|---|---|
| Flashes (one long and two short) | Quick Pairing Mode |
| Keeps on | Device is connected successfully |
| Flashes quickly | Compatible Pairing Mode |
| Flashes quickly once | Unable to discover the router |
| Flashes quickly twice | Connect to the router but fail to connect to Wi-Fi |
| Flashes quickly three times | Upgrading |
Features
Turn on/off the light or fan from anywhere, schedule it power on/off and share it with your family to control together.
- ? Remote Control
- ⏱️ Single/Countdown Timing
- ? Voice Control
- ? Share Control
- ? Smart Scene
- ? 433MHz Remote Control
- ? Camera Feature
- ? Touch Control
- ? LED Backlight
- ? LAN Control
Factory Reset
Long press any button for about 5s until the Wi-Fi LED indicator changes in a cycle of two short and one long flash and release. The device enters quick pairing mode (Touch).
ℹ️ Please reset the switch to factory defaults if you want to use other Wi-Fi networks, then reconnect the network.
Common Problems
Q: Why my device stays “Offline”?
A: The newly added device needs 1-2 minutes to connect to Wi-Fi and network. If it stays offline for a long time, check the blue Wi-Fi indicator status:
- Blue Wi-Fi indicator flashes once per second: Switch failed to connect to your Wi-Fi.
- Check Wi-Fi password.
- Ensure router is within range; move closer if interference is suspected.
- Only 2.4GHz Wi-Fi networks are supported, not 5G.
- Disable MAC address filtering on the router.
If issues persist, create a Wi-Fi hotspot from your mobile data and try adding the device again.
- Blue indicator flashes twice per second: Device connected to Wi-Fi but failed to connect to the server.
Ensure a stable network connection. Frequent double flashes may indicate an unstable network. If the network is normal, try restarting the switch by turning off the power.
