Introduction
SONOFF Wi-Fi Smart Switch
User Manual
Voice Control
Smart Scene
Remote Control
Power-on State
Timer Schedule
Share Device
LAN Control
Group Control
① Button
Single press: Changing the on/off state of relay contacts
Long press for 5s: Enter pairing mode
② Wi-Fi LED indicator (Blue)
● Flashes two short and one long: Device is in pairing mode.
● Keeps on: Online
● Flashes once: Offline
● Flashes twice: LAN
● Flashes three times: OTA
● Keep flashing: Overheat protection
③ Wiring ports
④ Protective cover
Compatible Voice Assistants
Specification
Model
BASICR4
MCU
ESP32-C3FN4
Input
100-240V ~ 50/60Hz Max 10A
Output
100-240V ~ 50/60Hz Max 10A
Max. Load
2400W@240V
Wireless Connectivity
Wi-Fi IEEE802.11b/g/n2.4GHz
Net Weight
47.3g
Dimension
88x39x24mm
Color
White
Casing Material
PC V0
Applicable Place
Indoor
Working Temperature
-10℃~40℃
Working Humidity
5%~95% RH, non-condensing
Certification
ISED/FCC/RoHS/ETL/CE/SRRC
Executive standard
EN IEC 60669-2-1, UL 60730-1, CSA E 60730-1
Download the“eWeLink”App
Please download the “eWeLink” App from Google Play Store or Apple App Store.
Installation
1. Power off
*Please install and maintain the device by a professional electrician. To avoid electric shock hazard, do not operate any connection or contact the terminal connector while the device is powered on!
2. Wiring instruction
To ensure the safety of your electrical installation, it’s essential either a Miniature Circuit Breaker (MCB) or a Residual Current Operated Circuit Breaker (RCBO) with an electrical rating of 10A has been installed before the BASICR4.
Wiring: 16-18AWG SOL/STR copper conductor only, Tightening torque: 3.5 lb-in
*Make sure all wires are connected correctly.
3. Power on
After powering on, the device will enter the Pairing Mode defaulted during the first use, and the LED indicator flashes in a cycle of two short and one long.
*The device will exit the Pairing Mode if it is not paired within 10mins. If you want to enter this mode again, please long press the button for 5s until the LED indicator flashes in a cycle of two short and one long and then release.
Add a Device
1.Download the“eWeLink”App
Please download the “eWeLink” App from Google Play Store or Apple App Store.
2.Add device
Please follow the wiring instructions to connect the wires (ensure power is disconnected in advance and consult an electrician if needed)
Power on the device
Enter “Scan QR code”
Scan the BASICR4 QR code on the device body
Select“Add Device”
Long press the button for 5 seconds
Check Wi-Fi LED indicator flashing status
(Two short and one long flashes)
Search for the device and start connecting
Select the “Wi-Fi” network and
enter the password
Device“Added completely”
Device Function
1. Magic Switch Mode
After short-circuiting the L1 and L2 of the switch terminals through the wires, the device can still be online and can be controlled through the APP after the users flip the wall switch to turn off/on the light.
• Add a wire to connect L1 to L2 on the wall switch following the manual, and the device will stay online even when you switch it off via the wall switch after “Magic Switch Mode” enabled.
• The “Power-on State” will automatically be set to OFF, to make the “Magic Switch Mode” functional when enabled.
• The “Magic Switch Mode” will automatically disable after your adjustment to the “Power-on State”.
Note: Only compatible with mainstream brands of double pole rocker switches Rocker switches. The rear-end light needs to be compatible with mainstream brands of LED, energy-saving lamps, and incandescent lamps ranging from 3W to 100W.
*This function also applies to dual-control lamps
2.Auxiliary overheating protection
With the product built-in temperature sensor, real-time maximum temperature of the entire product can be detected and speculated, which prevents the product from deformation, melting, fire or live devices exposing in case of over-temperature.
The device automatically cuts off the load when it gets too hot. To exit the overheating protection mode, simply press the button on the device after confirming that the load is functioning normally without any internal shorts, excessive power, or leaks.
*Please note that this function only serves as auxiliary protection and cannot be used in place of a circuit breaker.

