Note:

The relay controller is wifi+rf,the wall switch is rf only.Wall switch itself cannot control lights on off.It needs to work with wifi+rf receiver together.

Wifi+ RF controller (Receiver)

Input power : AC 85-240V
RF Frequency : 433MHz
WIFI Frequency : 2.4GHz
WiFi Standard : IEEE 802.11 b/g/n
Size : 41*41*20 (mm)
Max Current : 16A
Shell : Yes
Port : L/N
Certification : CCC,CE,RoHS
Feature : Has WiFi Function
Feature2 : Can Work with Tuya,Smart Home
Feature3 : Time Function
Feature4 : Voice Control by Google Home, Alexa

Wireless Wall Switch

working frequency:433MHZ
Power consumption in standby mode:<1uA
Transmitter power: <10mW
Working way: wireless control
Coding way: EV1527 learning code
Modulation: ASK
Working temperature:-10"C~+70*C
Size: 86*86* 15mm

How to get the signal?

Step 1: Press the learning button(on the Receiver) twice. Wait for 3 seconds;

Step 2: Press one button on the remote control. Wait for 3 seconds. Succeed.

How to clear the signal?

Only one step :Press the learning button(on the Receiver) 8 times. Wait for 3 seconds;